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  4. Interplay of Dzyaloshinskii-Moriya and Kitaev interactions for magnonic properties of Heisenberg-Kitaev honeycomb ferromagnets
 
research article

Interplay of Dzyaloshinskii-Moriya and Kitaev interactions for magnonic properties of Heisenberg-Kitaev honeycomb ferromagnets

Zhang, Li-Chuan
•
Zhu, Fengfeng
•
Go, Dongwook
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April 9, 2021
Physical Review B

The properties of Kitaev materials are attracting ever increasing attention owing to their exotic properties. In realistic two-dimensional materials, the Kitaev interaction is often accompanied by the Dzyaloshinskii-Moriya interaction, which poses a challenge for distinguishing their magnitudes separately. In this paper, we demonstrate that it can be done by accessing magnonic transport properties. By studying honeycomb ferromagnets exhibiting Dzyaloshinskii-Moriya and Kitaev interactions simultaneously, we reveal nontrivial magnonic topological properties accompanied by intricate magnonic transport characteristics as given by thermal Hall and magnon Nernst effects. We also investigate the effect of a magnetic field, showing that it does not only break the symmetry of the system but also brings drastic modifications to magnonic topological transport properties, which serve as hallmarks of the relative strength of anisotropic exchange interactions. Based on our findings, we suggest strategies to estimate the importance of Kitaev interactions in real materials.

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Type
research article
DOI
10.1103/PhysRevB.103.134414
Web of Science ID

WOS:000646308000003

Author(s)
Zhang, Li-Chuan
Zhu, Fengfeng
Go, Dongwook
Lux, Fabian R.
dos Santos, Flaviano Jose  
Lounis, Samir
Su, Yixi
Bluegel, Stefan
Mokrousov, Yuriy
Date Issued

2021-04-09

Published in
Physical Review B
Volume

103

Issue

13

Article Number

134414

Subjects

Materials Science, Multidisciplinary

•

Physics, Applied

•

Physics, Condensed Matter

•

Materials Science

•

Physics

•

anyons

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
THEOS  
Available on Infoscience
June 5, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/178666
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