Triplon band splitting and topologically protected edge states in the dimerized antiferromagnet

Kazuhiro Nawa; Kimihiko Tanaka; Nobuyuki Kurita; Taku J. Sato; Haruki Sugiyama; Hidehiro Uekusa; Seiko Ohira-Kawamura; Kenji Nakajima; Hidekazu Tanaka

doi:10.1038/s41467-019-10091-6

Nature Communications (May 2019)

Triplon band splitting and topologically protected edge states in the dimerized antiferromagnet

Kazuhiro Nawa,
Kimihiko Tanaka,
Nobuyuki Kurita,
Taku J. Sato,
Haruki Sugiyama,
Hidehiro Uekusa,
Seiko Ohira-Kawamura,
Kenji Nakajima,
Hidekazu Tanaka

Affiliations

Kazuhiro Nawa: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
Kimihiko Tanaka: Department of Physics, Tokyo Institute of Technology
Nobuyuki Kurita: Department of Physics, Tokyo Institute of Technology
Taku J. Sato: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
Haruki Sugiyama: Department of Chemistry, Tokyo Institute of Technology
Hidehiro Uekusa: Department of Chemistry, Tokyo Institute of Technology
Seiko Ohira-Kawamura: Materials and Life Science Division, J-PARC Center
Kenji Nakajima: Materials and Life Science Division, J-PARC Center
Hidekazu Tanaka: Department of Physics, Tokyo Institute of Technology

DOI: https://doi.org/10.1038/s41467-019-10091-6
Journal volume & issue: Vol. 10, no. 1
pp. 1 – 8

Abstract

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Topological edge states can emerge not only in a fermionic electron system but also in a bosonic system. Here, Nawa et al. report topologically nontrivial triplon bands in a two-dimensional dimerized quantum antiferromagnet Ba2CuSi2O6Cl2, suggesting a bosonic realization of the coupled Su-Schrieffer-Heeger model.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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