Kim Lefmann

Kim Lefmann

Professor

Member of:

    ORCID: 0000-0003-4282-756X

    Publication year:
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    1 - 50 out of 147Page size: 50
    1. 1986
    2. 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

    3. 1989
    4. Published

      Superflydende He-4

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

      Research output: Contribution to journal › Journal article › Communication

    5. 1993
    6. 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 journal › Journal article › Communication

    7. 1994
    8. 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 journal › Journal article › Research › peer-review

    9. 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

    10. 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 journal › Journal article › Communication

    11. 1995
    12. 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

    13. 1996
    14. 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

    15. 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

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

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

    18. 1997
    19. 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 journal › Journal article › Research › peer-review

    20. 2000
    21. 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 journal › Journal article › Research

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

    23. 2001
    24. 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 journal › Journal article › Research › peer-review

    25. 2002
    26. 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 journal › Journal article › Research › peer-review

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

    28. 2003
    29. 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 journal › Conference article › Research › peer-review

    30. 2004
    31. 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

    32. 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

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

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

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

    36. 2005
    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. 2006
    39. 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

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

    41. 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

    42. 2008
    43. 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

    44. 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

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

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

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

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

    49. 2009
    50. 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

    51. 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

    52. 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

    53. 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

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

    55. 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 conference › Conference abstract for conference › Research

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

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

    58. 2010
    59. 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 journal › Journal article › Research › peer-review

    60. 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 contribution › Research

    61. 2011
    62. 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

    63. 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

    64. 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

    65. 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

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

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

    68. 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

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