|Address:||Niels Bohr Institute|
I am working on the theory of magnetic structures and excitations in condensed matter systems with localized moments, i.e. primarily systems containing ions from the series of the Lanthanides or the Actinides. I have written a monograph on the subject in collaboration with Allan Mackintosh:
published by Clarendon Press, Oxford, England in 1991.
Des McMorrow, Henrik Rønnow and I have edited the proceedings of Magnetism in Metals, a symposium in memory of Allan Mackintosh (1936-95), Copenhagen, August 26-29, 1996 and published by The Royal Danish Academy of Sciences and Letters in Matematisk-fysiske Meddelelser 45 (1997).
U. B. Hansen, O. F. Syljuåsen, J. Jensen, T. K. Schãffer, C. R. Andersen, M. Boehm, J. A. Rodriguez-Rivera, N. B. Christensen, K. Lefmann, Magnetic Bloch oscillations and domain wall dynamics in a near-Ising ferromagnetic chain, Nat. Commun. 13, 2547 (2022). Additional information: Supplement.
R. Toft-Petersen, T. B. S. Jensen, J. Jensen, M. v. Zimmermann, S. Sloth, F. W. Isaksen, N. B. Christensen, Y. Chen, K. Siemensmeyer, H. Kawano-Furukawa, H. Takeya, A. B. Abrahamsen, and N. H. Andersen, Magnetoelastic phase diagram of TbNi2B2C, Phys. Rev. B 97, 224417 (2018).
J. Larsen, T. K. Schäffer, U. B. Hansen, S. L. Holm, S. R. Ahl, R. Toft-Petersen, J. Taylor, G. Ehlers, J. Jensen, H. M. Rønnow, K. Lefmann, and N. B. Christensen, Spin Excitations and Quantum Criticality in the Quasi One-Dimensional Ising-Like Ferromagnet CoCl2·2D2O in a Transverse Field, Phys. Rev. B 96, 174424 (2017).