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Niels Bohr Institute > Staff

Kim Lefmann

Kim Lefmann

Associate Professor

  • Xray and Neutron Science

    Universitetsparken 5, 2100 København Ø, HCØ, Building: D314

    Mobile: +45 29 25 04 76

  1. 2018
  2. Accepted/In press

    Magnetic ground state and magnon-phonon interaction in multiferroic h-YMnO3. / Holm-Dahlin, Sonja; Kreisel, Andreas; Schäffer, Turi Kirstine; Bakke, August; Bertelsen, Mads; Hansen, Ursula Bengård; Retuerto Millan, Maria; Larsen, J.; Prabhakaran, D.; Deen, P.P.; Yamani, Z.; Birk, Jonas Okkels; Stuhr, U.; Niedermayer, Ch.; Fennell, A.L.; Andersen, Brian Møller; Lefmann, Kim.

    In: arXiv, Vol. 1707.02468, 03.01.2018.

    Research output: Research - peer-reviewJournal article

  3. 2017
  4. Published

    Off-axis spin orientation in goethite nanoparticles. / Brok, Erik; Lefmann, Kim; Nilsen, Goran Jan; Kure, Mathias; Frandsen, Cathrine.

    In: Physical Review B, Vol. 96, No. 10, 104426, 19.09.2017.

    Research output: Research - peer-reviewJournal article

  5. Published

    Spin orientation in solid solution hematite-ilmenite. / Brok, Erik; Frandsen, Cathrine; Lefmann, Kim; McEnroe, Suzanne; Robinson, Peter; Burton-Pye, Benjamin P.; Hansen, Thomas C.; Harrison, Richard.

    In: American Mineralogist, Vol. 102, No. 6, 2017, p. 1234-1243.

    Research output: Research - peer-reviewJournal article

  6. Published

    Zero-order filter for diffractive focusing of de Broglie matter waves. / Eder, S. D.; Ravn, Anders Komar; Samelin, B.; Bracco, G.; Palau, A. Salvador; Reisinger, T.; Knudsen, Elias Stapput; Lefmann, Kim; Holst, Birgitte.

    In: Physical Review A, Vol. 95, No. 2, 023618, 2017.

    Research output: Research - peer-reviewJournal article

  7. Published

    Spin susceptibility of the topological superconductor UPt3 from polarized neutron diffraction. / Gannon, W. J.; Halperin, W.P.; Eskildsen, M. R.; Dai, Pengcheng; Hansen, U. B.; Lefmann, K.; Stunault, A.

    In: Physical Review B, Vol. 96, No. 4, 041111, 10.07.2017.

    Research output: Research - peer-reviewJournal article

  8. Published

    An optional focusing SELENE extension to conventional neutron guides : A case study for the ESS instrument BIFROST. / Hansen, Ursula Bengård; Bertelsen, Mads; Stahn, Jochen; Lefmann, Kim.

    In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, Vol. 852, 03.02.2017, p. 46-56.

    Research output: Research - peer-reviewJournal article

  9. 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.; Holm, S. L.; Ahl, Sonja Rosenlund; Toft-Petersen, R.; Taylor, J.; Ehlers, G.; Jensen, J.; Ronnow, H. M.; Lefmann, K.; Christensen, N. B.

    In: Physical Review B, Vol. 96, No. 17, 174424, 20.11.2017.

    Research output: Research - peer-reviewJournal article

  10. Published

    Staging superstructures in high-Tc Sr/O codoped La2-xSrxCuO4+y. / Ray, P. J.; Andersen, Niels Hessel; Jensen, T.B.S.; Mohottala, H. E.; Niedermayer, Ch.; Lefmann, Kim; v.Zimmermann, M.; Udby, Linda.

    In: Physical Review B, Vol. 96, 174106, 09.11.2017.

    Research output: Research - peer-reviewJournal article

  11. 2016
  12. Published

    Constraining neutron guide optimizations with phase-space considerations. / Bertelsen, Mads; Lefmann, Kim.

    In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, Vol. 830, 11.09.2016, p. 313-324.

    Research output: Research - peer-reviewJournal article

  13. Published

    VESPA : The vibrational spectrometer for the European Spallation Source. / Fedrigo, Anna; Colognesi, Daniele; Bertelsen, Mads; Hartl, Monika; Lefmann, Kim; Deen, Pascale P.; Strobl, Markus; Grazzi, Francesco; Zoppi, Marco.

    In: Review of Scientific Instruments, Vol. 87, No. 6, 065101, 02.06.2016.

    Research output: Research - peer-reviewJournal article

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