– Niels Bohr Institute - University of Copenhagen

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: Contribution to journalJournal article

  3. Published

    Prototype of the novel CAMEA concept—A backend for neutron spectrometers. / Marko, Marton; Groitl, Felix; Lass, Jakob; Birk, Jonas Okkels; Freeman, Paul; Lefmann, Kim; Christensen, Niels Bech; Niedermayer, C.; Juranyi, Fanni; Lass, Jakob; Hansen, Allan; Rønnow, Henrik Moodysson.

    In: Review of Scientific Instruments, Vol. 89, No. 1, 015105, 01.2018.

    Research output: Contribution to journalJournal article

  4. E-pub ahead of print

    Chemical tunnel-splitting-engineering in a dysprosium-based molecular nanomagnet. / Sørensen, Mikkel Agerbæk; Hansen, Ursula Bengård; Perfetti, Mauro; Pedersen, Kasper Steen; Bartolome, Elena; Simeoni, Giovanna G.; Mutka, Hannu; Rols, Stephane; Jeong, Minki; Zivkovic, Ivica; Retuerto, Maria; Arauzo, Ana; Bartolome, Juan; Piligkos, Stergios; Weihe, Høgni; Doerrer, Linda H.; van Slageren, Joris; Rønnow, Henrik Moodysson; Lefmann, Kim; Bendix, Jesper.

    In: Nature Communications, Vol. 9, 2018.

    Research output: Contribution to journalJournal article

  5. 2017
  6. 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: Contribution to journalJournal article

  7. 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: Contribution to journalJournal article

  8. 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: Contribution to journalJournal article

  9. Published

    Extraction of archaeological information from metallic artefacts-A neutron diffraction study on Viking swords. / Fedrigo, Anna; Grazzi, Francesco; Williams, Alan R.; Panzner, Tobias; Lefmann, Kim; Lindelof, Poul Erik; Jørgensen, Lars; Pentz, Peter; Scherillo, Antonella; Porcher, Florence; Strobl, Markus.

    In: Journal of Archaeological Science: Reports, Vol. 12, 2017, p. 425-436.

    Research output: Contribution to journalJournal article

  10. 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: Contribution to journalJournal article

  11. 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: Contribution to journalJournal article

  12. 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: Contribution to journalJournal article

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