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Proceedings Paper

Topological magnon insulators: Chern numbers and surface magnons
Author(s): Alexander Mook; Jürgen Henk; Ingrid Mertig
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Paper Abstract

Within the framework of a quantum-mechanical Heisenberg model, we address the topology of the magnon band structures of ferromagnetic pyrochlores, in particular Lu2V2O7. The bridge from Chern numbers of bulk magnons to essential properties of topological surface magnons is constructed by the bulk-boundary correspondence. The topological properties of the system which originate from the Dzyaloshinskii-Moriya interaction and show up as nonzero Berry curvatures suggest a method to clearly distinguish topological surface magnons from other, trivial magnons. The method is illustrated with regard to experiments.

Paper Details

Date Published: 26 September 2016
PDF: 6 pages
Proc. SPIE 9931, Spintronics IX, 993134 (26 September 2016); doi: 10.1117/12.2235847
Show Author Affiliations
Alexander Mook, Max Planck Institute for Microstructure Physics (Germany)
Jürgen Henk, Martin-Luther-Univ. Halle-Wittenberg (Germany)
Ingrid Mertig, Martin-Luther Univ. Halle-Wittenberg (Germany)
Max Planck Institute for Microstructure Physics (Germany)

Published in SPIE Proceedings Vol. 9931:
Spintronics IX
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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