Microscopic evaluation of isotropic and anisotropic exchange couplings
- Date
- Dec 8, 2015
- Time
- 11:00 AM - 12:00 PM
- Speaker
- Dr. Alexander Tsirlin
- Affiliation
- Experimental Physics VI, University of Augsburg
- Language
- en
- Main Topic
- Materialien
- Other Topics
- Materialien, Physik
- Host
- Grit Rötzer
- Description
- Magnetism of real materials requires multiple parameters for a quantitative microscopic description. While Heisenberg exchange J is often sufficient for predicting the type of magnetic ground state, directions of the magnetic moments relative to the crystal axes are determined by smaller anisotropy terms. In this talk, I will show how both isotropic and anisotropic exchanges can be obtained from DFT-based band-structure calculations, and present applications to several quantum magnets, including frustrated-square-lattice compounds PbVO3 and Li2VOSiO4 as well as francisite-type minerals with a strongly frustrated kagome-like interaction network. .
- Links
Last modified: Dec 8, 2015, 9:05:01 AM
Location
Leibniz Institut für Festkörper- und Werkstoffforschung Dresden (A2E.30, IFW Dresden)Helmholtzstraße2001069Dresden
- Homepage
- http://www.ifw-dresden.de
Organizer
Leibniz Institut für Festkörper- und Werkstoffforschung DresdenHelmholtzstraße2001069Dresden
- Homepage
- http://www.ifw-dresden.de
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