Kim Lefmann

Kim Lefmann

Professor

Member of:


    1. 2023
    2. Published

      Design, calibration, and performance of a uniaxial pressure cell for neutron scattering studies of quantum magnetism

      Sandberg, L. Ø., Haubro, M. L., Krighaar, Kristine Marie Løfgren, Edberg, R., Fjellvåg, I. M. B., Guthrie, M., Holmes, A. T., Mangin-thro, L., Wildes, A., Henelius, P., Lefmann, Kim & Deen, P. P., 3 Oct 2023, In: Review of Scientific Instruments. 94, 10, 17 p., 103901.

      Research output: Contribution to journalJournal articlepeer-review

    3. Published

      Race to Space: Use Neutron Scattering to Change the Future

      Bruun, Jesper, Harder, S., Karakosta, Petroula & Lefmann, Kim, 1 Oct 2023

      Research output: Other contributionEducation

    4. Published

      Multiple unconventional charge density wave transitions in LaPt2Si2 superconductor clarified with high-energy X-ray diffraction

      Nocerino, E., Sanlorenzo, I., Papadopoulos, K., Medarde, M., Lyu, J., Klein, Y. M., Minelli, A., Hossain, Z., Thamizhavel, A., Lefmann, Kim, Ivashko, O., Von Zimmermann, M., Sassa, Y. & Månsson, M., 30 Sep 2023, In: Communications Materials. 4, 1, 12 p., 77.

      Research output: Contribution to journalJournal articlepeer-review

    5. Published

      Diffuse spin waves and classical spin liquid behavior in the kagomé antiferromagnet chromium jarosite, KCr3(OD)6(SO4)2

      Janas, S., Lolk, S. L., Andersen, A. B. A., Guidi, T., Voneshen, D., Živković, I., Nielsen, U. G. & Lefmann, Kim, 29 Aug 2023, In: Physical Review B. 108, 6, 14 p., 064432.

      Research output: Contribution to journalJournal articlepeer-review

    6. Published

      Monolithic atom interferometry

      Fiedler, J., Lefmann, Kim, Von Klitzing, W. & Holst, B., 7 Aug 2023, In: Physical Review A. 108, 2, 8 p., 023306.

      Research output: Contribution to journalJournal articlepeer-review

    7. Published

      Evolution of magnetic stripes under uniaxial stress in La1.885Ba0.115CuO4 studied by neutron scattering

      Kamminga, M. E., Krighaar, Kristine Marie Løfgren, Romer, A. T., Sandberg, L. O., Deen, P. P., Boehm, M., Gu, G. D., Tranquada, J. M. & Lefmann, Kim, 12 Apr 2023, In: Physical Review B. 107, 14, 5 p., 144506.

      Research output: Contribution to journalJournal articlepeer-review

    8. Published

      Gradual emergence of superconductivity in underdoped La2-xSrxCuO4

      Ţuţueanu, A., Kamminga, M. E., Tejsner, T. B., Jacobsen, Henrik, Hansen, H. W., Lăcătuşu, M., Baas, J., Eliasen, K. L., Grivel, J., Sassa, Y., Christensen, N. B., Steffens, P., Boehm, M., Piovano, A., Lefmann, Kim & Rømer, A. T., 2023, In: Physical Review B. 107, 17, 6 p., 174514.

      Research output: Contribution to journalJournal articlepeer-review

    9. Published

      Nanocriticality in the magnetic phase transition of CoO nanoparticles

      Kamminga, M. E., Birk, J. O., Hjøllum, J., Jacobsen, Henrik, Lass, J., Koch, T. L., Christensen, N. B., Niedermayer, C., Keller, L., Kuhn, L. T., Ulrikkeholm, E. T., Brok, E., Frandsen, C. & Lefmann, Kim, 2023, In: Physical Review B. 107, 6, 6 p., 064424.

      Research output: Contribution to journalJournal articlepeer-review

    10. Published

      Q-dependent electron-phonon coupling induced phonon softening and non-conventional critical behavior in the CDW superconductor LaPt2Si2

      Nocerino, E., Stuhr, U., San Lorenzo, I., Mazza, F., Mazzone, D. G., Hellsvik, J., Hasegawa, S., Asai, S., Masuda, T., Itoh, S., Minelli, A., Hossain, Z., Thamizhavel, A., Lefmann, Kim, Sassa, Y. & Månsson, M., 2023, In: Journal of Science: Advanced Materials and Devices. 8, 4, 10 p., 100621.

      Research output: Contribution to journalJournal articlepeer-review

    11. Published

      The magnetic properties of MAl4(OH)12SO4·3H2O with M = Co2+, Ni2+, and Cu2+ determined by a combined experimental and computational approach

      Andersen, A. B. A., Christiansen, R. T., Holm-Janas, S., Manvell, A. S., Pedersen, K. S., Sheptyakov, D., Embs, J. P., Jacobsen, H., Dachs, E., Vaara, J., Lefmann, Kim & Nielsen, U. G., 2023, In: Physical Chemistry Chemical Physics. 25, 4, p. 3309–3322 14 p.

      Research output: Contribution to journalJournal articlepeer-review

    12. 2022
    13. Published

      Magnetic Bloch oscillations and domain wall dynamics in a near-Ising ferromagnetic chain

      Hansen, U. B., Syljuåsen, O. F., Jensen, Jens, Schäffer, T. K., Andersen, C. R., Boehm, M., Rodriguez-rivera, J. A., Christensen, N. B. & Lefmann, Kim, 10 May 2022, In: Nature Communications. 13, 1, 9 p., 2547.

      Research output: Contribution to journalJournal articlepeer-review

    14. 2021
    15. Published

      Emergent magnetic behavior in the frustrated Yb3Ga5O12 garnet

      Sandberg, L. O., Edberg, R., Bakke, I. B., Pedersen, K. S., Hatnean, M. C., Balakrishnan, G., Mangin-Thro, L., Wildes, A., Fak, B., Ehlers, G., Sala, G., Henelius, P., Lefmann, Kim & Deen, P. P., 13 Aug 2021, In: Physical Review B. 104, 6, 16 p., 064425.

      Research output: Contribution to journalJournal articlepeer-review

    16. Published

      McStas (ii): An overview of components, their use, and advice for user contributions

      Willendrup, P. K. & Lefmann, Kim, 23 Apr 2021, In: Journal of Neutron Research. 23, 1, p. 7-27 21 p.

      Research output: Contribution to journalJournal articlepeer-review

    17. Published

      Material properties particularly suited to be measured with helium scattering: selected examples from 2D materials, van der Waals heterostructures, glassy materials, catalytic substrates, topological insulators and superconducting radio frequency materials

      Holst, B., Alexandrowicz, G., Avidor, N., Benedek, G., Bracco, G., Ernst, W. E., Farias, D., Jardine, A. P., Lefmann, Kim, Manson, J. R., Marquardt, R., Artes, S. M., Sibener, S. J., Wells, J. W., Tamtoegl, A. & Allison, W., 7 Apr 2021, In: Physical Chemistry Chemical Physics. 23, 13, p. 7653-7672 20 p.

      Research output: Contribution to journalJournal articlepeer-review

    18. Published

      Classical Spin Liquid or Extended Critical Range in h-YMnO3?

      Janas, S., Lass, J., Tutueanu, A., Haubro, M. L., Niedermayer, C., Stuhr, U., Xu, G., Prabhakaran, D., Deen, P. P., fvh927, fvh927 & Lefmann, Kim, 11 Mar 2021, In: Physical Review Letters. 126, 10, 6 p., 107203.

      Research output: Contribution to journalJournal articlepeer-review

    19. Published

      Multinomial, Poisson and Gaussian statistics in count data analysis

      Lass, J., Boggild, M. E., Hedegård, Per & Lefmann, Kim, 2021, In: Journal of Neutron Research. 23, 1, p. 69-92 24 p.

      Research output: Contribution to journalJournal articlepeer-review

    20. Published

      Nature of the magnetic stripes in fully oxygenated La2CuO4+y

      Ţuţueanu, A., Jacobsen, Henrik, Jensen Ray, P., fvh927, fvh927, Lăcătuşu, M., Tejsner, T. B., Grivel, J., Schmidt, W., Toft-petersen, R., Steffens, P., Boehm, M., Wells, B., Udby, L., Lefmann, Kim & Rømer, A. T., 2021, In: Physical Review B. 103, 4, 15 p., 045138.

      Research output: Contribution to journalJournal articlepeer-review

    21. 2020
    22. Published

      MJOLNIR: A software package for multiplexing neutron spectrometers

      Lass, J., Jacobsen, H., Mazzone, D. G. & Lefmann, Kim, 1 Dec 2020, In: SoftwareX. 12, 9 p., 100600.

      Research output: Contribution to journalJournal articlepeer-review

    23. Published

      Structural characterization and magnetic properties of chromium jarosite KCr3(OD)6 (SO4)2

      Janas, S., Sorensen, M. B., Andersen, A. B. A., Juelsholt, M., Boehm, M., Pedersen, K. S., Jensen, Kirsten Marie Ørnsbjerg, Lefmann, Kim & Nielsen, U. G., 21 Nov 2020, In: Physical Chemistry Chemical Physics. 22, 43, p. 25001-25010 10 p.

      Research output: Contribution to journalJournal articlepeer-review

    24. Published

      Effects of uniaxial pressure on the spin ice Ho2Ti2O7

      Edberg, R., Bakke, I. M. B., Kondo, H., Sandberg, L. O., Haubro, M. L., Guthrie, M., Holmes, A. T., Engqvist, J., Wildes, A., Matsuhira, K., Lefmann, Kim, Deen, P. P., Mito, M. & Henelius, P., 9 Nov 2020, In: Physical Review B. 102, 18, 12 p., 184408.

      Research output: Contribution to journalJournal articlepeer-review

    25. Published

      Effects of ground movements on realistic guide models for the European Spallation Source

      Husgard, A., Olsen, M. A., Frøystad, R., Hyatt, J. P., zxj803, Z., Toft-Petersen., R. & Lefmann, Kim, 8 Oct 2020, In: Physical Review Accelerators and Beams. 23, 10, 8 p., 103501.

      Research output: Contribution to journalJournal articlepeer-review

    26. Published

      Non-destructive characterisation of dopant spatial distribution in cuprate superconductors

      Ţuţueanu, A., Sales, M., Eliasen, K. L., Lǎcǎtuşu, M., Grivel, J., Kardjilov, N., Manke, I., Krzyzagorski, M., Sassa, Y., Andersson, M. S., Schmidt, S. & Lefmann, Kim, 1 Aug 2020, In: Physica C: Superconductivity and its Applications. 575, 6 p., 1353691.

      Research output: Contribution to journalJournal articlepeer-review

    27. Published

      McStas (i): Introduction, use, and basic principles for ray-tracing simulations

      Willendrup, P. K. & Lefmann, Kim, 2 Apr 2020, In: Journal of Neutron Research. 22, 1, p. 1-16 16 p.

      Research output: Contribution to journalJournal articlepeer-review

    28. Published

      The instrument suite of the European Spallation Source

      Andersen, K. H., Argyriou, D. N., Jackson, A. J., Houston, J., Henry, P. F., Deen, P. P., Toft-Petersen, R., Beran, P., Strobl, M., Arnold, T., Wacklin-Knecht, H., Tsapatsaris, N., Oksanen, E., Woracek, R., Schweika, W., Mannix, D., Hiess, A., Kennedy, S., Kirstein, O., Petersson Årsköld, S. & 30 others, Taylor, J., Hagen, M. E., Laszlo, G., Kanaki, K., Piscitelli, F., Khaplanov, A., Stefanescu, I., Kittelmann, T., Pfeiffer, D., Olsson, M., Nunes Bordallo, Heloisa, Vickery, A., Fedrigo, A., Rodrigues, S., Lerche, M., Schulz, M., Müller, M., Carlsen, H., Udby, L., Lefmann, Kim, Birk, J. O., fvh927, fvh927, Bertelsen, M., Hansen, U. B., Olsen, M. A., Christensen, M., Iversen, K., Christensen, N. B., Rønnow, H. M. & Chowdhury, M., 21 Mar 2020, In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 957, 39 p., 163402.

      Research output: Contribution to journalJournal articlepeer-review

    29. Published

      Coherent Epitaxial Semiconductor-Ferromagnetic Insulator InAs/EuS Interfaces: Band Alignment and Magnetic Structure

      Liu, Yu, Luchini, A., Marti-Sanchez, S., Koch, C., Schuwalow, S., Khan, S. A., Stankevic, T., Francoual, S., Mardegan, J. R. L., Krieger, J. A., Strocov, V. N., Stahn, J., Vaz, C. A. F., Ramakrishnan, M., Staub, U., Lefmann, Kim, Aeppli, G., Arbiol, J. & Krogstrup, Peter, 19 Feb 2020, In: A C S Applied Materials and Interfaces. 12, 7, p. 8780-8787 8 p.

      Research output: Contribution to journalJournal articlepeer-review

    30. Published

      Field-induced magnetic incommensurability in multiferroic Ni3TeO6

      Lass, J., Andersen, C. R., Leerberg, H. K., Birkemose, S., Toth, S., Stuhr, U., Bartkowiak, M., Niedermayer, C., Lu, Z., Toft-Petersen, R., Retuerto, M., Birk, J. O. & Lefmann, Kim, 2020, In: Physical Review B. 101, 5, p. 1-9 9 p., 054415.

      Research output: Contribution to journalJournal articlepeer-review

    31. Published

      Multiple scattering camouflaged as magnetic stripes in single crystals of superconducting (La,Sr)2CuO4

      Tutueanu, A. E., Tejsner, T. B., Lacatusu, M. E., Hansen, H. W., Eliasen, K. L., Bohm, M., Steffens, P., Niedermayer, C. & Lefmann, Kim, 2020, In: Journal of Neutron Research. 22, 1, p. 49-56

      Research output: Contribution to journalJournal articlepeer-review

    32. 2019
    33. Published

      Dipolar spin ice under uniaxial pressure

      Edberg, R., Sandberg, L. O., Bakke, I. M. B., Haubro, M. L., Folkers, L. C., Mangin-Thro, L., Wildes, A., Zaharko, O., Guthrie, M., Holmes, A. T., Sorby, M. H., Lefmann, Kim, Deen, P. P. & Henelius, P., 25 Oct 2019, In: Physical Review B. 100, 14, 8 p., 144436.

      Research output: Contribution to journalJournal articlepeer-review

    34. Published

      Optimization of Performance, Price, and Background of Long Neutron Guides for European Spallation Source

      fvh927, fvh927, Olsen, M. A., Bertelsen, M., Birk, J. O. & Lefmann, Kim, 1 Sep 2019, In: Quantum Beam Science. 3, 3, 23 p., UNSP16.

      Research output: Contribution to journalJournal articlepeer-review

    35. Published

      Exact diagonalization study of the Hubbard-parametrized four-spin ring exchange model on a square lattice

      Larsen, C. B., Rømer, A. T., Janas, S., Treue, F., Mønsted, B., Shaik, N. E., Rønnow, H. M. & Lefmann, Kim, 2019, In: Physical Review B. 99, 5, 12 p., 054432.

      Research output: Contribution to journalJournal articlepeer-review

    36. 2018
    37. Published

      Optimizing neutron guides: CoatingWriter

      Olsen, M. A., Bertelsen, M. & Lefmann, Kim, 12 Dec 2018, In: Journal of Neutron Research. 20, 4, p. 137-139

      Research output: Contribution to journalJournal articlepeer-review

    38. Published

      Chemical tunnel-splitting-engineering in a dysprosium-based molecular nanomagnet

      Sørensen, M. A., Hansen, U. B., Perfetti, M., Pedersen, K. S., Bartolome, E., Simeoni, G. G., Mutka, H., Rols, S., Jeong, M., Zivkovic, I., Retuerto Millan, M., Arauzo, A., Bartolome, J., Piligkos, Stergios, Weihe, Høgni, Doerrer, L. H., van Slageren, J., Rønnow, H. M., Lefmann, Kim & Bendix, Jesper, 1 Dec 2018, In: Nature Communications. 9, 9 p., 1292.

      Research output: Contribution to journalJournal articlepeer-review

    39. Published

      Erratum: Magnetic ground state and magnon-phonon interaction in multiferroic h-YMnO3

      fvh927, fvh927, Kreisel, Andreas, Schäffer, T. K., Bakke, A., Bertelsen, M., Hansen, U. B., Retuerto, M., Larsen, J., Prabhakaran, D., Deen, P. P., Yamani, Z., Birk, J. O., Stuhr, U., Niedermayer, C., Fennell, A. L., Andersen, Brian Møller & Lefmann, Kim, 17 Sep 2018, In: Physical Review B. 97, 9, 134304.

      Research output: Contribution to journalComment/debatepeer-review

    40. Published

      Distinct Nature of Static and Dynamic Magnetic Stripes in Cuprate Superconductors

      Jacobsen, Henrik, fvh927, fvh927, Lacatusu, M. -., Romer, A. T., Bertelsen, M., Boehm, M., Toft-Petersen, R., Grivel, J. -., Emery, S. B., Udby, L., Wells, B. O. & Lefmann, Kim, 18 Jan 2018, In: Physical Review Letters. 120, 3, 5 p., 037003.

      Research output: Contribution to journalJournal articlepeer-review

    41. Published

      24-spin clusters in the mineral boleite KPb26Ag9Cu24Cl62(OH)48

      Dreier, E. S., fvh927, fvh927, Lonbaek, K., Hansen, U. B., Medarde, M., Zivkovic, I., Babkevich, P., Ruminy, M., Casati, N., Piovano, A., Rols, S., Nilsen, G. J., Boehm, M., Skoulatos, M., Schefer, J., Ronnow, H. M., Fennell, T. & Lefmann, Kim, 17 Jan 2018, In: Physical Review B. 97, 1, 014416.

      Research output: Contribution to journalJournal articlepeer-review

    42. Published

      Prototype of the novel CAMEA concept—A backend for neutron spectrometers

      Marko, M., Groitl, F., Lass, J., Birk, J. O., Freeman, P., Lefmann, Kim, Christensen, N. B., Niedermayer, C., Juranyi, F., Lass, J., Hansen, A. & Rønnow, H. M., Jan 2018, In: Review of Scientific Instruments. 89, 1, 13 p., 015105.

      Research output: Contribution to journalJournal articlepeer-review

    43. Published

      Magnetic Anisotropy Switch: Easy Axis to Easy Plane Conversion and Vice Versa

      Perfetti, M., Sørensen, M. A., Hansen, U. B., Bamberger, H., Lenz, S., Hallmen, P. P., Fennell, T., Simeoni, G. G., Arauzo, A., Bartolome, J., Bartolome, E., Lefmann, Kim, Weihe, Høgni, van Slageren, J. & Bendix, Jesper, 2018, In: Advanced Functional Materials. 28, 32, 8 p., 1801846.

      Research output: Contribution to journalJournal articlepeer-review

    44. Published

      Magnetic ground state and magnon-phonon interaction in multiferroic h-YMnO3

      fvh927, fvh927, Kreisel, Andreas, Schäffer, T. K., Bakke, A., Bertelsen, M., Hansen, U. B., Retuerto Millan, M., Larsen, J., Prabhakaran, D., Deen, P. P., Yamani, Z., Birk, J. O., Stuhr, U., Niedermayer, C., Fennell, A. L., Andersen, Brian Møller & Lefmann, Kim, 2018, In: Physical Review B. 97, 13, 11 p., 134304 .

      Research output: Contribution to journalJournal articlepeer-review

    45. Published

      Neutron imaging study of 'pattern-welded' swords from the Viking Age

      Fedrigo, A., Strobl, M., Williams, A. R., Lefmann, Kim, Lindelof, Poul Erik, Jørgensen, L., Pentz, P., Bausenwein, D., Schillinger, B., Kovyakh, A. & Grazzi, F., 2018, In: Archaeological and Anthropological Sciences. 10, 6, p. 1249-1263 15 p.

      Research output: Contribution to journalJournal articlepeer-review

    46. 2017
    47. Published

      Spin excitations and quantum criticality in the quasi-one-dimensional Ising-like ferromagnet CoCl2 center dot 2D2O in a transverse field

      Larsen, J., Schaffer, T. K., Hansen, U. B., fvh927, fvh927, Ahl, S. R., Toft-Petersen, R., Taylor, J., Ehlers, G., Jensen, Jens, Ronnow, H. M., Lefmann, Kim & Christensen, N. B., 20 Nov 2017, In: Physical Review B. 96, 17, 174424.

      Research output: Contribution to journalJournal articlepeer-review

    48. Published

      Staging superstructures in high-Tc Sr/O codoped La2-xSrxCuO4+y

      Ray, P. J., Andersen, N. H., Jensen, T. B. S., Mohottala, H. E., Niedermayer, C., Lefmann, Kim, v.Zimmermann, M. & Udby, L., 9 Nov 2017, In: Physical Review B. 96, 6 p., 174106.

      Research output: Contribution to journalJournal articlepeer-review

    49. Published

      Off-axis spin orientation in goethite nanoparticles

      Brok, E., Lefmann, Kim, Nilsen, G. J., Kure, M. & Frandsen, C., 19 Sep 2017, In: Physical Review B. 96, 10, 104426.

      Research output: Contribution to journalJournal articlepeer-review

    50. Published

      Spin susceptibility of the topological superconductor UPt3 from polarized neutron diffraction

      Gannon, W. J., Halperin, W. P., Eskildsen, M. R., Dai, P., Hansen, U. B., Lefmann, Kim & Stunault, A., 10 Jul 2017, In: Physical Review B. 96, 4, 041111.

      Research output: Contribution to journalJournal articlepeer-review

    51. Published

      An optional focusing SELENE extension to conventional neutron guides: A case study for the ESS instrument BIFROST

      Hansen, U. B., Bertelsen, M., Stahn, J. & Lefmann, Kim, 3 Feb 2017, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 852, p. 46-56

      Research output: Contribution to journalJournal articlepeer-review

    52. Published

      Extraction of archaeological information from metallic artefacts-A neutron diffraction study on Viking swords

      Fedrigo, A., Grazzi, F., Williams, A. R., Panzner, T., Lefmann, Kim, Lindelof, Poul Erik, Jørgensen, L., Pentz, P., Scherillo, A., Porcher, F. & Strobl, M., 2017, In: Journal of Archaeological Science: Reports. 12, p. 425-436 12 p.

      Research output: Contribution to journalJournal articlepeer-review

    53. Published

      Spin orientation in solid solution hematite-ilmenite

      Brok, E., Frandsen, C., Lefmann, Kim, McEnroe, S., Robinson, P., Burton-Pye, B. P., Hansen, T. C. & Harrison, R., 2017, In: American Mineralogist. 102, 6, p. 1234-1243 10 p.

      Research output: Contribution to journalJournal articlepeer-review

    54. Published

      Zero-order filter for diffractive focusing of de Broglie matter waves

      Eder, S. D., Ravn, A. K., Samelin, B., Bracco, G., Palau, A. S., Reisinger, T., Knudsen, E. S., Lefmann, Kim & Holst, B., 2017, In: Physical Review A. 95, 2, 5 p., 023618.

      Research output: Contribution to journalJournal articlepeer-review

    55. 2016
    56. Published

      Constraining neutron guide optimizations with phase-space considerations

      Bertelsen, M. & Lefmann, Kim, 11 Sep 2016, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 830, p. 313-324

      Research output: Contribution to journalJournal articlepeer-review

    57. Published

      Neutron guide shielding for the BIFROST spectrometer at ESS

      Mantulnikovs, K., Bertelsen, M., Cooper-jensen, C. P., Lefmann, Kim & Klinkby, E. B., 1 Sep 2016, In: Journal of Physics - Conference Series. 746, 1, 012027.

      Research output: Contribution to journalConference articlepeer-review

    58. Published

      HEIMDAL: A thermal neutron powder diffractometer with high and flexible resolution combined with SANS and neutron imaging - Designed for materials science studies at the European Spallation Source

      fvh927, fvh927, Lefmann, Kim, Henry, P. F., Bertelsen, M., Schefer, J. & Christensen, M., 21 Aug 2016, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 828, p. 229-241

      Research output: Contribution to journalJournal articlepeer-review

    59. Published

      Simulating X-ray telescopes with McXtrace: A case study of ATHENA's optics

      Ferreira, D. D. M., Knudsen, E. B., Westergaard, N. J., Christensen, F. E., Massahi, S., Shortt, B., Spiga, D., Solstad, M. & Lefmann, Kim, 26 Jun 2016, In: Proceedings of S P I E - International Society for Optical Engineering. 9905, UNSP 990576.

      Research output: Contribution to journalConference articlepeer-review

    60. Published

      VESPA: The vibrational spectrometer for the European Spallation Source

      Fedrigo, A., Colognesi, D., Bertelsen, M., Hartl, M., Lefmann, Kim, Deen, P. P., Strobl, M., Grazzi, F. & Zoppi, M., 2 Jun 2016, In: Review of Scientific Instruments. 87, 6, 065101.

      Research output: Contribution to journalJournal articlepeer-review

    61. Published

      Optimizing a neutron-beam focusing device for the direct geometry time-of-flight spectrometer TOFTOF at the FRM II reactor source

      Rasmussen, N. G., Simeoni, G. G. & Lefmann, Kim, 2016, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 816, p. 106-112 7 p.

      Research output: Contribution to journalJournal articlepeer-review

    62. 2015
    63. Published

      Simulation of waviness in neutron guides

      Hansen, U. B., Bertelsen, M., Lefmann, Kim & Bergbäck Knudsen, E., 31 Dec 2015, In: Journal of Neutron Research. 18, 2-3, 45-59.

      Research output: Contribution to journalJournal articlepeer-review

    64. Published

      Field-induced interplanar magnetic correlations in the high-temperature superconductor La1.88Sr0.12CuO4

      Rømer, A. T., Ray, P. J., Jacobsen, Henrik, Udby, L., Andersen, Brian Møller, Bertelsen, M., fvh927, fvh927, Christensen, N. B., Toft-Petersen, R., Skoulatos, M., Laver, M., Schneidewind, A., Link, P., Oda, M., Ido, M., Nomono, N. & Lefmann, Kim, 11 May 2015, In: Physical Review B. 91, 174507.

      Research output: Contribution to journalJournal articlepeer-review

    65. Published

      Neutron guide-split: A high performance guide bundle concept for elliptical guides

      fvh927, fvh927, Rasmussen, N., Høpfner, L., Bertelsen, M., Voigt, J., Andersen, K. H. & Lefmann, Kim, 11 May 2015, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 782, p. 1-8 8 p.

      Research output: Contribution to journalJournal articlepeer-review

    66. Published

      Polarized neutron powder diffraction studies of antiferromagnetic order in bulk and nanoparticle NiO

      Brok, E., Lefmann, Kim, Deen, P. P., Lebech, B., Jacobsen, Henrik, G., N. & Frandsen, C., 26 Jan 2015, In: Physical Review B. 91, 014431.

      Research output: Contribution to journalJournal articlepeer-review

    67. Published

      CAMEA ESS - The Continuous Angle Multi-Energy Analysis Indirect Geometry Spectrometer for the European Spallation Source

      Freeman, P. G., Birk, J. O., Marko, M., Bertelsen, M., Christensen, N. B., Lefmann, Kim, Jacobsen, J., Niedermayer, C., Juranyi, F. & Ronnow, H. M., 23 Jan 2015, In: Journal of Physics: Conference Series (Online). 83, 7 p., 03005.

      Research output: Contribution to journalConference articlepeer-review

    68. Published

      Competing superconducting and magnetic order parameters and field-induced magnetism in electron-doped Ba(Fe1-xCox)(2)As-2

      Larsen, J., Uranga, B. M., Stieper, G., fvh927, fvh927, Bernhard, C., Wolf, T., Lefmann, Kim, Andersen, Brian Møller & Niedermayer, C., 13 Jan 2015, In: Physical Review B. 91, 2, 10 p., 025404.

      Research output: Contribution to journalJournal articlepeer-review

    69. Published

      Anomalous magnetic structure and spin dynamics in magnetoelectric LiFePO4

      Toft-Petersen, R., Reehuis, M., Jensen, T. B. S., Andersen, N. H., Li, J., Le, M. D., Laver, M., Niedermayer, C., Klemke, B., Lefmann, Kim & Vaknin, D., 2015, In: Physical Review B. 92, 2, 9 p., 024404.

      Research output: Contribution to journalJournal articlepeer-review

    70. Published

      Dynamic rotor mode in antiferromagnetic nanoparticles

      Lefmann, Kim, Garde, J., Jacobsen, Henrik, Hedegård, Per, Ancona, S. N., Bahl, C. R. H. & Kuhn, L. T., 2015, In: Physical Review B. 91, 10 p., 094421.

      Research output: Contribution to journalJournal articlepeer-review

    71. Published

      Prediction of beam hardening artefacts in computed tomography using Monte Carlo simulations

      Thomsen, M., Knudsen, E. B., Willendrup, P. K., Bech, M., Willner, M., Pfeiffer, F., Poulsen, M., Lefmann, Kim & Feidenhans'l, Robert Krarup, 2015, In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 342, p. 314-320 7 p.

      Research output: Contribution to journalJournal articlepeer-review

    72. 2014
    73. Published

      A compact time-of-flight SANS instrument optimised for measurements of small sample volumes at the European Spallation Source

      Kynde, S., Kleno, K. H., Nagy, G., Mortensen, Kell, Lefmann, Kim, Kohlbrecher, J. & Arleth, Lise, 11 Nov 2014, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 764, p. 133-141

      Research output: Contribution to journalJournal articlepeer-review

    74. Published

      Prismatic analyzer concept for neutron spectrometers

      Birk, J. O., Marko, M., Freeman, P. G., Jacobsen, J., Hansen, R. L., Niedermayer, C., Christensen, N. B., Måsson, M., Rønnow, H. M. & Lefmann, Kim, 1 Nov 2014, In: Review of Scientific Instruments. 85, 11, 113908.

      Research output: Contribution to journalJournal articlepeer-review

    75. Published

      Magnetic properties of ultra-small goethite nanoparticles

      Brok, E., Frandsen, C., Madsen, D. E., Jacobsen, Henrik, Birk, J. O., Lefmann, Kim, Bendix, Jesper, Pedersen, K. S., Boothroyd, C. B., Berhe, A. A., Simeoni, G. G. & Mørup, S., 9 Oct 2014, In: Journal of Physics D: Applied Physics. 47, 36, 365003.

      Research output: Contribution to journalJournal articlepeer-review

    76. Published

      Visualisation by high resolution synchrotron X-ray phase contrast micro-tomography of gas films on submerged superhydrophobic leaves

      Lauridsen, T., Glavina, K., Colmer, T. D., Winkel, A., Irvine, S., Lefmann, Kim, Feidenhans'l, Robert Krarup & Pedersen, Ole, 1 Oct 2014, In: Journal of Structural Biology. 188, 1, p. 61-70

      Research output: Contribution to journalJournal articlepeer-review

    77. Published

      New developments in the McStas neutron instrument simulation package

      Willendrup, P. K., Knudsen, E. B., Klinkby, E. B., Nielsen, T. N., Farhi, E., Filges, U. & Lefmann, Kim, 1 Aug 2014, In: Journal of Physics: Conference Series (Online). 528, 1, 012035.

      Research output: Contribution to journalJournal articlepeer-review

    78. Published

      Corrigendum to "Bi-spectral extraction through elliptic neutron guides " [Nucl.Inst.and Meth A717(2013) 69-76]

      Jacobsen, Henrik, Lieutenant, K., Zendlle, C. & Lefmann, Kim, 11 Apr 2014, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 743, p. 160-160

      Research output: Contribution to journalComment/debatepeer-review

    79. Published

      Simulations of chopper jitter at the LET neutron spectrometer at the ISIS TS2

      Klenø, K. H., Lefmann, Kim, Willendrup, P. K., Christiansen, P. & Bewley, R., 9 Apr 2014, In: Journal of Neutron Research. 17, 2, p. 77-85

      Research output: Contribution to journalJournal articlepeer-review

    80. Published

      Experimental evidence for lamellar magnetism in hemo-ilmenite by polarized neutron scattering

      Brok, E., Sales, M., Lefmann, Kim, Kuhn, L. T., Schmidt, W. F., Roessli, B., McEnroe, S. A. & Harrison, R. J., 26 Feb 2014, In: Physical Review B. 89, 054430.

      Research output: Contribution to journalJournal articlepeer-review

    81. Published

      McStas: Past, present and future

      Willendrup, P. K., Farhi, E., Knudsen, E., Filges, U. & Lefmann, Kim, 19 Feb 2014, In: Journal of Neutron Research. 17, 1, p. 35-43

      Research output: Contribution to journalJournal articlepeer-review

    82. Published

      Magnetic properties of nano-scale hematite, α-Fe2O3, studied by time-of-flight inelastic neutron spectroscopy

      Hill, A. H., Jacobsen, Henrik, Ross Stewart, J., Jiao, F., Jensen, N. P., fvh927, fvh927, Mutka, H., Seydel, T., Harrison, A. & Lefmann, Kim, 25 Jan 2014, In: Journal of Chemical Physics. 140, 9 p., 044709.

      Research output: Contribution to journalJournal articlepeer-review

    83. Published

      Investigation of propagation algorithms for ray-tracing simulation of polarized neutrons

      Knudsen, E. B., Rømer, A. T., Willendrup, P. K., Christiansen, P. & Lefmann, Kim, 1 Jan 2014, In: Journal of Neutron Research. 17, 1, p. 27-34

      Research output: Contribution to journalJournal articlepeer-review

    84. Published

      Special Issue: Workshop on the Monte Carlo Simulation of Neutron Scattering Instruments MCNSI7

      Lefmann, Kim & Šaroun, J., 1 Jan 2014, In: Journal of Neutron Research. 17, 1, p. 3-3

      Research output: Contribution to journalJournal articlepeer-review

    85. 2013
    86. Published

      Measurement of unique magnetic and superconducting phases in oxygen-doped high-temperature superconductors La2-xSrxCuO4+y

      Udby, L., Larsen, J., Christensen, N. B., Boehm, M., Niedermayer, C., Mohottala, H. E., Jensen, T. B. S., Toft-Petersen, R., Chou, F. C., Andersen, N. H., Lefmann, Kim & Wells, B. O., 25 Nov 2013, In: Physical Review Letters. 111, 22, 5 p., 227001.

      Research output: Contribution to journalJournal articlepeer-review

    87. Published

      Exploring performance of neutron guide systems using pinhole beam extraction

      Bertelsen, M., Jacobsen, Henrik, Hansen, U. B., Carlsen, H. H. & Lefmann, Kim, 21 Nov 2013, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 729, p. 387-398

      Research output: Contribution to journalJournal articlepeer-review

    88. Published

      A Monte Carlo Simulation of Neutron Instrument Resolution Functions: Proceedings of 10th International Conference on Quasielastic Neutron Scattering and 5th Workshop on Inelastic Neutron Spectrometers

      Vickery, A., Udby, L., Violini, N., Voigt, J., Deen, P. P. & Lefmann, Kim, 12 Nov 2013, In: Journal of the Physical Society of Japan. 82, Supplement A , 9 p., SA037.

      Research output: Contribution to journalConference articlepeer-review

    89. Published

      50 Years of Swiss Neutron Diffraction Instrumentation

      Fischer, P., Schefer, J., Keller, L., Zaharko, O., Pomjakushin, V., Aliouane, N., Frontzek, M., fvh927, fvh927, Lefmann, Kim & Christensen, M., 2 Aug 2013, In: Swiss Neutron News. 42, p. 4-15 11 p.

      Research output: Contribution to journalJournal article

    90. Published

      Nordic neutron Scattering Communities 2008-2013 - a bibliometric study

      Lefmann, Kim & Bakke, A., 1 Aug 2013

      Research output: Other contributionCommunication

    91. Published

      Bi-spectral extraction through elliptic neutron guides

      Jacobsen, Henrik, Lieutenant, K., Zendlle, C. & Lefmann, Kim, 21 Jul 2013, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 717, p. 69-76

      Research output: Contribution to journalJournal articlepeer-review

    92. Published

      McXtrace: a Monte Carlo software package for simulation of X-ray optics, beamlines, and experiments

      Bergbäck Knudsen, E., Prodi, A., Baltser, J., Thomsen, M., Willendrup, P. K., del Rio, M. S., Ferrero, C., Farhi, E., Haldrup, M. K., Vickery, A., Feidenhans'l, Robert Krarup, Mortensen, Kell, Nielsen, M. M., Poulsen, H. F., Schmidt, S. & Lefmann, Kim, 1 Jun 2013, In: Journal of Applied Crystallography. 46, Part 3, p. 679-696 18 p.

      Research output: Contribution to journalJournal articlepeer-review

    93. Published

      Glassy low-energy spin fluctuations and anisotropy gap in La1.88Sr0.12CuO4

      Rømer, A. T., Chang, J., Andersen, Brian Møller, Lefmann, Kim, Christensen, N. B., Mähler, L., Gavilano, J., Gilardi, R., Niedermayer, C., Rønnow, H. M., Schniedewind, A., Link, P., Oda, M., Ido, M., Momono, N. & Mesot, J., 22 Apr 2013, In: Physical Review B. 87, 14, p. 144513

      Research output: Contribution to journalJournal articlepeer-review

    94. Published

      "European Spallation Source - Technical Design Report"

      Arleth, Lise, Bertelsen, M., Birk, J. O., Nunes Bordallo, Heloisa, Carlsen, H., Hansen, U. B., fvh927, fvh927, Høpfner, L., Jacobsen, Henrik, Klenø, K. H., Kynde, S. A. R., Lefmann, Kim, Rasmussen, N., Sales, M., Skar-Gislinge, Nicholas, Skelboe, Stig, Theodor, K., Udby, L., Vickery, A. & Rod, T. H., 15 Apr 2013, Technical Design Report . ESS Lund ed. Lund, Sverige

      Research output: Chapter in Book/Report/Conference proceedingReport chapterResearchpeer-review

    95. Published

      E-learning neutron scattering

      Udby, L., Ray, P. J., Lefmann, Kim, Bruun, J., Willendrup, P. K., Nielsen, J. S. B., Schober, H., Neuhaus, J. & Pulz, J., 1 Feb 2013, In: Neutron News. 24, 1, p. 18-23 6 p.

      Research output: Contribution to journalJournal articlepeer-review

    96. Published

      Simulation of a suite of generic long-pulse neutron instruments to optimize the time structure of the European Spallation Source

      Lefmann, Kim, Klenø, K. H., Birk, J. O., Hansen, B. R., fvh927, fvh927, Knudsen, E., Lieutenant, K., von Moos, L., Sales, M., Willendrup, P. K. & Andersen, K. H., 2013, In: Review of Scientific Instruments. 84, 5, 9 p., 055106.

      Research output: Contribution to journalJournal articlepeer-review

    97. 2012
    98. Published

      Systematic performance study of common neutron guide geometries

      Klenø, K. H., Lieutenant, K., Andersen, K. H. & Lefmann, Kim, 22 Dec 2012, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 696, p. 75-84 9 p.

      Research output: Contribution to journalJournal articlepeer-review

    99. Published

      Temperature dependence of the magnetization of canted spin structures

      Jacobsen, Henrik, Lefmann, Kim, Brok, E., Frandsen, C. & Morup, S., 1 Sep 2012, In: Journal of Magnetism and Magnetic Materials. 324, 19, p. 3218-3222 4 p.

      Research output: Contribution to journalJournal articlepeer-review

    100. Published

      Solitonic lattice and Yukawa forces in the rare-earth orthoferrite TbFeO3

      Artyukhin, S., Mostovoy, M., Jensen, N. P., Le, D., Prokes, K., de paula, V. G., Nunes Bordallo, Heloisa, Maljuk, A., Landsgesell, S., Ryll, H., Klemke, B., Paeckel, S., Kiefer, K., Lefmann, Kim, Kuhn, L. T. & Argyriou, D. N., 24 Jun 2012, In: Nature Materials. 11, 8, p. 694-699 6 p.

      Research output: Contribution to journalJournal articlepeer-review

    101. Published

      Hindered Rotational Energy Barriers of BH4 Tetrahedra in beta-Mg(BH4)(2) from Quasielastic Neutron Scattering and DFT Calculations

      Blanchard, D., Maronsson, J. B., Riktor, M. D., Kheres, J., Sveinbjörnsson, D., Gil Bardaji, E., Léon, A., Juranyi, F., Wuttke, J., Lefmann, Kim, Hauback, B. C., Fichtner, M. & Vegge, T., 19 Jan 2012, In: Journal of Physical Chemistry C. 116, 2, p. 2013-2023 10 p.

      Research output: Contribution to journalJournal articlepeer-review

    102. 2011
    103. Published

      Spin reorientation in a-Fe2O3 nanoparticles induced by interparticle exchange interactions in a-Fe2O3/NiO nanocomposites

      Frandsen..[et al.], C., Lefmann, Kim, Lebech, B., Bahi, C. R. H., Brok, E., Ancona, S. N. & Theil Kuhn, L., 22 Dec 2011, In: Physical Review B Condensed Matter. 84, 21, p. 214435 10 p.

      Research output: Contribution to journalJournal articlepeer-review

    104. Published

      Magnetic field-induced closure of the spin excitation gap near optimal doping in La2-xSrxCuO4: Proceedings of the International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 (NASCES11)

      Christensen ...[et al.], N. B., Chang, J., Razzoli, E. & Lefmann, Kim, 20 Dec 2011, In: Journal of the Physical Society of Japan. 80, Suppl. B, p. SB030 4 p.

      Research output: Contribution to journalConference articlepeer-review

    105. Published

      Powder diffractometers at long-pulsed sources: Proceedings of the International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 (NASCES11)

      Sales, M., fvh927, fvh927, Lieutenant, K. & Lefmann, Kim, 20 Dec 2011, In: Journal of the Physical Society of Japan. 80, Suppl.B, p. SB018 4 p.

      Research output: Contribution to journalConference articlepeer-review

    106. Published

      Thermal chopper spectrometer for the European spallation source: Proceedings of the International Workshop on Neutron Applications on Strongly Correlated Electron Systems 2011 (NASCES11)

      Klenø, K. H. & Lefmann, Kim, 20 Dec 2011, In: Journal of the Physical Society of Japan. 80, Sppl.B, p. SB004

      Research output: Contribution to journalConference articlepeer-review

    107. Published

      A Monte Carlo approach for simulating the propagation of partially coherent x-ray beams

      Prodi, A., Feidenhans'l, Robert Krarup, Lefmann, Kim, Knudsen, E., Willendrup, P. K., Schmitt, S. & Ferrero, C., 23 Sep 2011, In: Proceedings of SPIE. 8141, p. 814108

      Research output: Contribution to journalConference articlepeer-review

    108. Published

      Advanced simulations of x-ray beam propagation through CRL transfocators using ray-tracing and wavefront propagation methods

      Baltser, J., Vickery, A., Feidenhans'l, Robert Krarup, Lefmann, Kim, Chubar, O., Snigirev, A. & Vaughan, G., 23 Sep 2011, In: Proceedings of SPIE. 8141, p. 814111

      Research output: Contribution to journalConference articlepeer-review

    109. Published

      McXtrace: a modern ray-tracing package for x-ray instrumentation

      Knudsen, E. B., Prodi, A., Willendrup, P. K., Lefmann, Kim, Baltser, J., Gundlach, C., Sanchez del Rio, M., Ferrero, C. & Feidenhans'l, Robert Krarup, 23 Sep 2011, In: Proceedings of SPIE. 8141, p. 81410G-81410G-7

      Research output: Contribution to journalConference articlepeer-review

    110. Published

      High-field magnetic phase transitions and spin excitations in magnetoelectric LiNiPO4

      Toft-Petersen, R., Jensen, Jens, Jensen, T. B. S., Andersen, N. H., Christensen, N. B., Niedermayer, C., Kenzelmann, M., Skoulatos, M., Le, M. D., Lefmann, Kim, Hansen, S. R., Li, J., Zarestky, J. L. & Vaknin, D., 2 Aug 2011, In: Physical Review B Condensed Matter. 84, 5, p. 054408 10 p.

      Research output: Contribution to journalJournal articlepeer-review

    111. Published

      McStas-model of the Delft SESANS

      Knudsen, E., Udby, L., Willendrup, P. K., Lefmann, Kim & Bouwman, W. G., 1 Jun 2011, In: Physica B: Condensed Matter. 406, 12, p. 2361-2364

      Research output: Contribution to journalJournal articlepeer-review

    112. Published

      Analysing neutron scattering data using McStas virtual experiments

      Udby, L., Willendrup, P. K., Knudsen, E., Niedermayer, C., Filges, U., Christensen, N. B., Farhi, E., Wells, B. O. & Lefmann, Kim, 1 Apr 2011, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634, Suppl. 1, p. S138-S143

      Research output: Contribution to journalConference articlepeer-review

    113. Published

      Eliminating line of sight in elliptic guides using gravitational curving

      Klenø, K. H., Willendrup, P. K., Lefmann, Kim & Knudsen, E., 1 Apr 2011, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634, Suppl. 1, p. S100-S103

      Research output: Contribution to journalConference articlepeer-review

    114. Published

      Optimal shape of a cold-neutron triple-axis spectrometer

      Lefmann, Kim, Filges, U., Treue, F., Kirkensgaard, Jacob Judas Kain, Plesner, B., Hansen, K. S. & Klenø, K. H., 1 Apr 2011, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634, 1 (Suppl. 1), p. S1-S6 6 p.

      Research output: Contribution to journalConference articlepeer-review

    115. Published

      Using McStas for modelling complex optics, using simple building bricks

      Willendrup, P. K., Udby, L., Knudsen, E., Farhi, E. & Lefmann, Kim, 1 Apr 2011, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 634, Sp.1, p. S150-S155

      Research output: Contribution to journalConference articlepeer-review

    116. Published

      Status of the danish Neutron Scattering Society

      Lefmann, Kim, 1 Mar 2011

      Research output: Other contributionCommunication

    117. Published

      ESS, en forskningsfacilitet i verdensklasse under opbygning i Lund

      Lefmann, Kim, Arleth, Lise, Christensen, N. B., Møller, S. P., Skelboe, Stig & Willendrup, P. K., 1 Feb 2011, In: Kvant. 22, 1, p. 25-32

      Research output: Contribution to journalJournal article

    118. 2010
    119. Published

      Simulation of a suite of generic long-pulse neutron instruments to optimize the time structure of the European Spallation Source accelerator: Report to ESS-SAC

      Lefmann, Kim, Filges, U., fvh927, fvh927, Klenø, K. H., Lieutenant, K., Knudsen, E., von Moos, L., Sales, M. & Willendrup, P. K., 1 Oct 2010

      Research output: Other contributionResearch

    120. Published

      Field-induced tomonaga-luttinger liquid phase two-leg spin 1/2 ladder with strong leg interactions

      Hong...[et al.], T., Kim, Y. H., Hotta, C. & Lefmann, Kim, 23 Sep 2010, In: Physical Review Letters. 105, 13, p. 137207 4 p.

      Research output: Contribution to journalJournal articlepeer-review

    121. 2009
    122. Published

      Long-Pulse Neutron Instrumentation Workshop, August 26-28, 2009

      Crawford, R. K., Arai, M., Carlile, C., Chapon, L., Granroth, G., Langridge, S., Lefmann, Kim, Mezei, F., Monkenbusch, M., Muhrer, G. & Wiedenmann, A., 26 Aug 2009, Oak Ridge, USA

      Research output: Other contributionResearch

    123. Published

      Magnetic ordering in electronically phase-separated La2-x Srx CuO4+y: Neutron diffraction experiments

      Udby, L., Chou, F. C., Christensen, N. B., Emery, S. B., Lefmann, Kim, Lynn, J. W., Mohottala, H. E., Niedermayer, C. & Wells, B. O., 6 Aug 2009, In: Physical Review B - Condensed Matter and Materials Physics. 80, 1, 014505.

      Research output: Contribution to journalJournal articlepeer-review

    124. Published

      Anomalous spin waves in the commensurate-incommensurate magnetic phase transition in  LiNiPO4

      Jensen, T. B. S., Christensen, N. B. & Lefmann, Kim, 2009, In: Physical Review B Condensed Matter. 79, 9, p. 092413

      Research output: Contribution to journalJournal articlepeer-review

    125. Published

      Design and simulation of instruments for a long-pulsed spallation source - ESS

      Lefmann, K., Willendrup, P. K., Knudsen, E., Larsen, F. K., Lieutenant, K., Habitch, K., Strobl, M., Kleno, K. H., Voigt, J., Frielinghaus, H., Manoshin, S., Stahn, J., Kohlbrecher, J., Filges, U., Farhi, E., Bentley, P., Cubitt, B., Wiedenmann, A., Regnault, L-P., Menelle, A. & 12 others, Goukassov, A., Rodriguez-Carvajal, J., Cuello, G., Tucker, M. G., Webster, J. R. P., Percival, A., Granroth, G., Robertson, L., Nylander, T., Mortensen, Kell, Vettier, C. & Mezei, F., 2009. 1 p.

      Research output: Contribution to conferenceConference abstract for conferenceResearch

    126. Published

      Field-induced competing interactions for ferroelectric polarization in  LiNiPO4

      Jensen, T. B. S., Christensen, N. B., Kenzelmnn, M., Rønnow, H. M., Niedermayer, C., Andersen, N. H., Lefmann, Kim, Schefer, J., Zimmermann, M. V., Li, J., Zarestsky, J. L. & Vaknin, D., 2009, In: Physical Review B Condensed Matter. 79, 9, p. 092412

      Research output: Contribution to journalJournal articlepeer-review

    127. Published

      Magnetic ordering in electronically phase-separated La(2-x)Sr(x)CuO(4+y): Neutron diffraction experiments

      Udby, L., Andersen, N. H., Chou, F. C., Christensen, N. B., Emery, S. B., Lefmann, Kim, Lynn, J. W., Mohottala, H. E., Niedermayer, C. & Wells, B. O., 2009, In: Physical Review B Condensed Matter. 80, p. 014505 5 p.

      Research output: Contribution to journalJournal articlepeer-review

    128. Published

      Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855 Sr0.145 CuO4: An inelastic neutron-scattering study

      Chang, J., Christensen, N. B. & Lefmann, Kim, 2009, In: Physical Review Letters. 102, 17, p. 177006

      Research output: Contribution to journalJournal articlepeer-review

    129. Published

      Neutron optics and Monte Carlo simulations in NMI3

      Böni, P. & Lefmann, Kim, 2009, In: Neutron News. 20, 1, p. 26-29 3 p.

      Research output: Contribution to journalJournal articlepeer-review

    130. 2008
    131. Published

      Avoided crossing of rattler modes in thermoelectric materials

      Christensen, M., Abrahamsen, A. B., Christensen, N. B., Juranyi, F., Andersen, N. H., Lefmann, Kim, Andreasson, J., Bahl, C. & Iversen, B. B., 2008, In: Nature Materials. 7, 10, p. 811-815

      Research output: Contribution to journalJournal articlepeer-review

    132. Published

      Reduction of data from inverted-geometry time-of-flight instruments

      Tregenna-Piggott, P. L. W., Juryani, F., Christiansen, P., Willendrup, P. & Lefmann, Kim, 2008, In: Journal of Neutron Research. 16, 1&2, p. 13-22 9 p.

      Research output: Contribution to journalJournal articlepeer-review

    133. Published

      Simulation of a multiple-wavelength time-of-fligt neutron spectrometer for a long-pulsed spallation source

      Lefmann, Kim, Schober, H. & Mezei, F., 2008, In: Measurement Science and Technology. 19, 3, p. 034025 12 p.

      Research output: Contribution to journalJournal articlepeer-review

    134. Published

      Tailored instrumentation for long-pulse neutron spallation sources

      Schober, H., Farhi, E., Mezei, F., Andersen, K., Bentley, P. M., Christiansen, P. & Lefmann, Kim, 2008, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 589, 1, p. 34-46 12 p.

      Research output: Contribution to journalJournal articlepeer-review

    135. Published

      Uniform spin wave modes in antiferromagnetic nanoparticles with uncompensated moments

      Bahl, C. R. H., Garde, J., Lefmann, Kim, Jensen, T. B. S., Lindegård, P., Madsen, D. E. & Mørup, S., 2008, In: European Physical Journal B. Condensed Matter and Complex Systems. 62, 1, p. 53-57 22 p.

      Research output: Contribution to journalJournal articlepeer-review

    136. Published

      Virtual experiments: the ultimate aim of neutron ray-tracing simulations

      Lefmann, Kim, Willendrup, P. K., Udby, L., Lebech, B., Mortensen, Kell, Birk, J. O., Klenø, K. H., Knudsen, E., Christiansen, P., Saroun, J., Kulda, J., Filges, U., Konnecke, M., Tregenna-Piggott, P., Peters, J., Lieutenant, K., Zsigmond, G., Bentley, P. & Fahri, E., 2008, In: Journal of Neutron Research. 16, 3-4, p. 97-111 15 p.

      Research output: Contribution to journalJournal articlepeer-review

    137. 2006
    138. Published

      Realizing the full potential of a RITA spectrometer

      Lefmann, Kim, Abrahamsen, A. B., Bahl, C. R. H., Christensen, N. B., Jacobsen, H. S., Larsen, T. L., Häflinger, P., Filges, U. & Rønnow, H. M., 27 Nov 2006, In: Physica B: Condensed Matter. 385-386, 2, p. 1083-1085

      Research output: Contribution to journalConference articlepeer-review

    139. Published

      Neutron study of magnetic excitations in 8-nm α-Fe2O3 nanoparticles

      Kuhn, L. T., Lefmann, Kim, Bahl, C. R. H., Nyborg Ancona, S., Lindgård, P., Frandsen, C., Madsen, D. E. & Steen, M., 3 Nov 2006, In: Physical Review B. 74, 184406.

      Research output: Contribution to journalJournal articlepeer-review

    140. Published

      Inelastic neutron scattering experiments with the monochromatic imaging mode of the RITA-II spectrometer

      Bahl, C. R. H., Lefmann, Kim, Abrahamsen, A. B., Rønnow, H. M., Saxild, F., Jensen, T. B. S., Udby, L. & Andersen, N. H., 1 May 2006, In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 246, 2, p. 452-462

      Research output: Contribution to journalJournal articlepeer-review

    141. 2005
    142. Published

      Oriented attachment and exchange coupling of α-Fe2O3 nanoparticles

      Frandsen, C., Bahl, C. R. H., Lebech, B., Lefmann, Kim, Theil Kuhn, L., Keller, L., Andersen, N. H., v.Zimmermann, M., Johnson, Erik, Klausen, S. N. & Mørup, S., 6 Dec 2005, In: Physical Review B. 72, 214406.

      Research output: Contribution to journalJournal articlepeer-review

    143. 2004
    144. Published

      Magnetic anisotropy and quantized spin waves in hematite nanoparticles

      Klausen, S. N., Lefmann, Kim, Lindgård, P., Kuhn, L. T., Bahl, C. R. H., Frandsen, C., Mørup, S., Roessli, B., Cavadini, N. & Niedermayer, C., 9 Dec 2004, In: Physical Review B. 70, 214411.

      Research output: Contribution to journalJournal articlepeer-review

    145. Published

      The monochromatic imaging mode of a RITA-type neutron spectrometer

      Bahl, C. R. H., Andersen, P., Klausen, S. N. & Lefmann, Kim, 1 Dec 2004, In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 228, 4, p. 667-681

      Research output: Contribution to journalJournal articlepeer-review

    146. Published

      Dynamics in γ-Fe2O3 nanoparticles studied by time-of-flight polarized neutron scattering

      Theil Kuhn, L., Lefmann, Kim, Klausen, S. N., Rønnow, H. M., Murani, A. & Srewart, R., 3 Sep 2004, In: Physica B: Condensed Matter. 350, p. e217-e219

      Research output: Contribution to journalConference articlepeer-review

    147. Published

      Monte Carlo simulations as a part of the configuration for neutron instruments

      Andersen, P., Lefmann, Kim, Kuhn, L. T., Willendrup, P. K. & Farhi, E., 3 Sep 2004, In: Physica B: Condensed Matter. 350, p. e721-e724

      Research output: Contribution to journalConference articlepeer-review

    148. Published

      Neutron diffraction study of anomalous high-field magnetic phases in TmNi2B2C

      Toft, K. N., Abrahamsen, A. B., Eskildsen, M. R., Lefmann, Kim, Andersen, N. H., Vorderwisch, P., Smeibidl, P., Meissner, M. & Canfield, P. C., 15 Jun 2004, In: Physical Review B. 69, 214507.

      Research output: Contribution to journalJournal articlepeer-review

    149. 2003
    150. Published

      An inelastic neutron scattering study of hematite nanoparticles

      Klausen, S. N., Lefmann, Kim, Lindgård, P., Klausen, N. K., Hansen, M. F., Bødker, F., Mørup, S. & Telling, M., 1 Oct 2003, In: Journal of Magnetism and Magnetic Materials. 266, 1-2, p. 68-78

      Research output: Contribution to journalConference articlepeer-review

    151. 2002
    152. Published

      Comment on "Spin Dynamics of the 2D Spin Quantum Antiferromagnet Copper Deuteroformate Tetradeuterate (CFTD)"

      Rønnow, H. M., McMorrow, D. F., Coldea, R., Harrison, A., Youngson, I. D., Perring, T. G., Aeppli, G., Syljuåsen, O. F., Lefmann, Kim & Rischel, C., 30 Jun 2002, In: Physical Review Letters. 89, 079702.

      Research output: Contribution to journalJournal articlepeer-review

    153. Published

      Magnetic propertie of nanoparticales of antiferromagnetic materials

      Mørup, S., Frandsen, C., Bødker, F., Klausen, S. N., Lefmann, Kim, Lindgård, P. & Hansen, M. F., 12 Jan 2002, In: Hyperfine Interactions. 144-145, 1-4, p. 347-357

      Research output: Contribution to journalJournal articlepeer-review

    154. 2001
    155. Published

      Spin Dynamics of the 2D Spin ½ Quantum Antiferromagnet Copper Deuteroformate Tetradeuterate (CFTD)

      Rønnow, H. M., McMorrow, D. F., Goldea, R., Harrison, A., Youngson, I. D., Perring, T. G., Aeppli, G., Syljuåsen, O. F., Lefmann, Kim & Rischel, C., 28 Jun 2001, In: Physical Review Letters. 87, 037202.

      Research output: Contribution to journalJournal articlepeer-review

    156. 2000
    157. Published

      Double-Spin-Flip Resonance of Rhodium Nuclei at Positive and Negative Spin Temperatures

      Tuoriniemi, J. T., Nummila, K. K., Lefmann, Kim, Knuuttila, T. A., Yao, W. & Rasmussen, Finn Berg, 10 Jan 2000, In: Physical Review Letters. 84, p. 370-373

      Research output: Contribution to journalJournal articlepeer-review

    158. Published

      Thermodynamics of Rh nuclear spins calculated by exact diagonalization

      Lefmann, Kim, Ipsen, J., Rasmussen, Finn Berg & Rasmussen, Finn Berg, 1 Jan 2000, In: Physica B: Condensed Matter. 284-288, PART II, p. 1702-1703 2 p.

      Research output: Contribution to journalJournal article

    159. 1997
    160. Published

      Nuclear order in silver at pico-Kelvin temperature

      Siemensmeyer, K., Clausen, Kristine Bülow, Lefmann, Kim, Lounasmaa, O. V., Metz, A., Nummila, K. K., Steiner, M., Tuoriniemi, J. T., Vuorinen, R. T. & Rasmussen, Finn Berg, 2 Jun 1997, In: Physica B: Condensed Matter. 234-236, p. 768-769 2 p.

      Research output: Contribution to journalJournal articlepeer-review

    161. 1996
    162. Published

      Dynamical correlation functions of the S=½ nearest-neighbor and Haldane-Shastry Heisenberg antiferromagnetic chains in zero and applied fields

      Lefmann, Kim & Rischel, C., 1 Sep 1996, In: Physical Review B. 54, p. 6340-6350

      Research output: Contribution to journalJournal articlepeer-review

    163. Published

      Neutron diffraction determination of the nuclear spin ordering in Cu and Ag at nano- and subnano-K temperatures

      Steiner, M., Metz, A., Siemensmeyer, K., Lounasmaa, O. V., Tuoriniemi, J. T., Nummila, K. K., Vuorinen, R. T., Clausen, K. N., Lefmann, Kim & Rasmussen, Finn Berg, 1 Apr 1996, In: Journal of Applied Physics. 79, 8, p. 5078-5080 3 p.

      Research output: Contribution to journalJournal articlepeer-review

    164. Published
    165. Published

      Neutron experiments on nuclear order in silver at pK temperatures

      Nummila, K. K., Tuoriniemi, J. T., Vuorinen, R. T., Lounasmaa, O. V., Lefmann, Kim, Clausen, Kristine Bülow, Metz, A., Siemensmeyer, K., Lipinski, L., Steiner, M. & Rasmussen, Finn Berg, 1 Jan 1996, In: Czechoslovak Journal of Physics. 46, SUPPL. 4, p. 2201-2202 2 p.

      Research output: Contribution to journalJournal articlepeer-review

    166. 1995
    167. Published

      Neutron Experiments on Antiferromagnetic Nuclear Order in Silver at Picokelvin Temperatures

      Tuoriniemi, J. T., Nummila, K., Vuorinen, R. T., Lounasmaa, O. V., Metz, A., Siemensmayer, K., Steiner, M., Clausen, K. N., Lefmann, Kim & Rasmussen, Finn Berg, 30 Jun 1995, In: Physical Review Letters. 75, p. 3744-3747

      Research output: Contribution to journalJournal article

    168. 1994
    169. Published

      NMR spectra of pure 13C diamond

      Lefmann, Kim, Buras, B., Pedersen, E. J., Shabanova, E. S., Thorsen, P. A., Rasmussen, Finn Berg & Sellschop, J. P. F., 1 Dec 1994, In: Physical Review B. 50, 15623.

      Research output: Contribution to journalJournal articlepeer-review

    170. Published

      Neutron scattering cross section of the S=1/2 Heisenberg triangular antiferromagnet

      Lefmann, Kim & Hedegård, Per, 1 Jul 1994, In: Physical Review B. Condensed Matter and Materials Physics. 50, 1047.

      Research output: Contribution to journalJournal articlepeer-review

    171. Published

      Foton - et fysikspil

      Oddershede, L. B., Jacobsen, R. H., Lefmann, Kim & Thoft, N. B., 1 Mar 1994, In: Kvant. 4, p. 9-18

      Research output: Contribution to journalJournal article

    172. 1993
    173. Published

      Bodegadage (on the physics of billiards)

      Lefmann, Kim, 19 Nov 1993, In: Monthly Communication from the Faculty of Science . 2, p. 15-16

      Research output: Contribution to journalJournal article

    174. 1989
    175. Published

      Superflydende He-4

      Lefmann, Kim & Rischel, C., 18 Nov 1989, In: Gamma. 75, p. 3-13

      Research output: Contribution to journalJournal article

    176. 1986
    177. Published

      Study of solid-surface-induced molecular dissociation leading to atomic excitations

      rtc312, rtc312, Jensen, J. O., Lefmann, Kim, Solvsteen, C. & Veje, E., 1 Mar 1986, In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 13, 1-3, p. 230-234

      Research output: Contribution to journalJournal articlepeer-review

    ID: 3673604