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Dresden 2020 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 39: Correlation Theory II

MA 39.1: Vortrag

Mittwoch, 18. März 2020, 15:00–15:15, HSZ 403

Magnetism of the rare-earth elements, have we really understood everything ? — •olle Eriksson — Uppsala University, Uppsala, Sweden — Örebro University, Örebro, Sweden

The magnetic properties of rare-earth elements will be described in this talk, with focus on how well electronic structure theory is able to reproduce observations. In this presentation, it is described how information from electronic structure calculations can be mapped to a low energy effective spin-Hamiltonian, and the accuracy of this Hamiltonian is tested against known observables like magnon dispersion and ordering temperature. Recent results suggest that the magnetic configuration of light rare-earths is considerably more complex than previously assumed. These complex magnetic structures are analyzed from an electronic structure point of view. It is demonstrated that properties hitherto unknown among any magnetic system, may indeed be observed in the light rare-earths.

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