Kim Lefmann

Kim Lefmann

Professor

Member of:

    ORCID: 0000-0003-4282-756X

    Publication year:
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    1 - 25 out of 147Page size: 25
    1. 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 journal › Conference article › Research › peer-review

    2. 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

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

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

    5. 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

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

    7. 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

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

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

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

    11. 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

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

    13. 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

    14. 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

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

    16. Published

      kernemagnetisk orden i sølv, verden 3. koldeste forsøg ( Nuclear magnetic order in silver the 3rd coldest experiment ever)

      Lefmann, Kim & Rasmussen, Finn Berg, 1 Mar 1996, In: Kvant. 8

      Research output: Contribution to journal › Journal article › Communication

    17. 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

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

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

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

    21. 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 journal › Journal article › Research

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

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

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

    25. 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

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