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Dirac Surface States in Magnonic Analogs of Topological Crystalline Insulators

Hiroki Kondo and Yutaka Akagi
Phys. Rev. Lett. 127, 177201 – Published 20 October 2021
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Abstract

We propose magnonic analogs of topological crystalline insulators which possess Dirac surface states protected by the combined symmetry of time reversal and half translation. Constructing models of the topological magnon systems, we demonstrate that an energy current flows through the systems in response to an electric field, owing to the Dirac surface states with the spin-momentum locking. We also propose a realization of the magnonic analogs of topological crystalline insulators in the magnetic compound CrI3 with a monoclinic structure.

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  • Received 7 December 2020
  • Revised 6 September 2021
  • Accepted 21 September 2021

DOI:https://doi.org/10.1103/PhysRevLett.127.177201

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Hiroki Kondo* and Yutaka Akagi

  • Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan

  • *kondo-hiroki290@g.ecc.u-tokyo.ac.jp

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Issue

Vol. 127, Iss. 17 — 22 October 2021

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