Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session B59: Skyrmions and Topological Magnonics
11:15 AM–2:03 PM,
Monday, March 2, 2020
Room: Mile High Ballroom 3C
Sponsoring
Unit:
DMP
Abstract: B59.00002 : Three-dimensional topological magnon systems*
Presenter:
Hiroki Kondo
(Univ of Tokyo)
Authors:
Hiroki Kondo
(Univ of Tokyo)
Yutaka Akagi
(Univ of Tokyo)
Hosho Katsura
(Univ of Tokyo)
Building on this previous work, in this study, we propose a concept of three-dimensional (3D) topological magnon systems characterized by a set of Z2 topological invariants [3]. They can be thought of as magnonic analogs of 3D topological insulators. One of the models proposed is a bosonic counterpart of the Fu-Kane-Mele model, which is found to exhibit three distinct phases analogous to strong topological, weak topological, and trivial insulator phases. We also discuss a possible realization of the thermal Hall effect of surface Dirac magnons in the presence of a magnetic field.
[1] V. A. Zyuzin and A. A. Kovalev, Phys. Rev. Lett. 117, 217203 (2016).
[2] H. Kondo, Y. Akagi, and H. Katsura, Phys. Rev. B 99, 041110(R) (2019).
[3] H. Kondo, Y. Akagi, and H. Katsura, Phys. Rev. B 100, 144401 (2019) [selected as Editor’s Suggestion].
**JSPS Grant-in-Aid for Scientific Research on Innovative Areas: No. JP18H04478 (H.Katsura) and No. 18H04220 (Y.A.)
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