Topological magnon insulators: Chern numbers and surface magnons

Alexander Mook; Jürgen Henk; Ingrid Mertig

doi:10.1117/12.2235847

26 September 2016 Topological magnon insulators: Chern numbers and surface magnons

Alexander Mook, Jürgen Henk, Ingrid Mertig

Proceedings Volume 9931, Spintronics IX; 993134 (2016) https://doi.org/10.1117/12.2235847
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

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.

Conference Presentation

Citation Download Citation

Alexander Mook, Jürgen Henk, and Ingrid Mertig "Topological magnon insulators: Chern numbers and surface magnons", Proc. SPIE 9931, Spintronics IX, 993134 (26 September 2016); https://doi.org/10.1117/12.2235847

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