Kim Lefmann

Kim Lefmann

Professor

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    ORCID: 0000-0003-4282-756X

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    1. 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 journal › Journal article › Research › peer-review

    2. 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 journal › Journal article › Research › peer-review

    3. 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 journal › Conference article › Research › peer-review

    4. 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 proceeding › Report chapter › Research › peer-review

    5. 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 journal › Journal article › Research › peer-review

    6. 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 journal › Journal article › Research › peer-review

    7. 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 journal › Journal article › Research › peer-review

    8. 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 journal › Journal article › Research › peer-review

    9. 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 journal › Conference article › Research › peer-review

    10. 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 journal › Journal article › Research › peer-review

    11. 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 journal › Journal article › Research › peer-review

    12. 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 journal › Journal article › Research › peer-review

    13. 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 journal › Journal article › Research › peer-review

    14. 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 journal › Journal article › Research › peer-review

    15. 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 journal › Journal article › Research › peer-review

    16. 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 journal › Journal article › Research › peer-review

    17. 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 journal › Journal article › Research › peer-review

    18. 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 journal › Journal article › Research › peer-review

    19. 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 journal › Journal article › Research › peer-review

    20. 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 contribution › Education

    21. 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 journal › Journal article › Research › peer-review

    22. 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 journal › Journal article › Research › peer-review

    23. 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 journal › Journal article › Research › peer-review

    24. 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 journal › Journal article › Research › peer-review

    25. 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 journal › Conference article › Research › peer-review

    26. 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 contribution › Research

    27. 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 journal › Journal article › Research › peer-review

    28. 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 journal › Journal article › Research › peer-review

    29. 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 journal › Journal article › Research › peer-review

    30. 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 journal › Journal article › Research › peer-review

    31. 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 journal › Journal article › Research › peer-review

    32. 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 journal › Journal article › Research › peer-review

    33. 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 journal › Journal article › Research › peer-review

    34. 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 journal › Conference article › Research › peer-review

    35. 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 journal › Journal article › Research › peer-review

    36. 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 journal › Journal article › Research

    37. 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 journal › Journal article › Research › peer-review

    38. 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 journal › Journal article › Research › peer-review

    39. 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 journal › Conference article › Research › peer-review

    40. 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 journal › Journal article › Research › peer-review

    41. 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 journal › Journal article › Research › peer-review

    42. 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 journal › Journal article › Research › peer-review

    43. 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 journal › Journal article › Research › peer-review

    44. 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 journal › Journal article › Research › peer-review

    45. 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 journal › Journal article › Research › peer-review

    46. 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 journal › Journal article › Research › peer-review

    47. 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 journal › Comment/debate › Research › peer-review

    48. 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 journal › Journal article › Research › peer-review

    49. 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 journal › Journal article › Research › peer-review

    50. 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 journal › Journal article › Research › peer-review

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