Noncollinear antiferromagnetic Haldane magnon insulator

In this paper, we present a comprehensive study of topological magnon bands and thermal Hall effect in non-collinear antiferromagnetic systems on the honeycomb lattice with an intrinsic Dzyaloshinskii-Moriya interaction. We theoretically show that the system possesses topological magnon bands with C...

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Veröffentlicht in:Journal of applied physics 2017-06, Vol.121 (22)
1. Verfasser: Owerre, S. A.
Format: Artikel
Sprache:eng
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Zusammenfassung:In this paper, we present a comprehensive study of topological magnon bands and thermal Hall effect in non-collinear antiferromagnetic systems on the honeycomb lattice with an intrinsic Dzyaloshinskii-Moriya interaction. We theoretically show that the system possesses topological magnon bands with Chern number protected edge modes accompanied by a nonzero thermal magnon Hall effect. These features result from non-collinearity of the magnetic moments due to an applied out-of-plane magnetic field. Our results provide an experimental clue towards the realization of topological magnon transports in honeycomb antiferromagnetic compounds such as XPS3 (X = Mn,Fe) and α-Cu2V2O7.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4985615