Article Realization of Topological Phase in a Chiral Honeycomb Lattice Model

Genki Yonezawa ORCID ; Jun-ichi Fukuda ORCID ; Toshikaze Kariyado SAMURAI ORCID

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Genki Yonezawa, Jun-ichi Fukuda, Toshikaze Kariyado. Realization of Topological Phase in a Chiral Honeycomb Lattice Model. Journal of the Physical Society of Japan. 2025, 94 (2), 024702. https://doi.org/10.48505/nims.5471

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(abstract)

We investigate topological properties of a chiral honeycomb lattice model with next-nearest- neighbor hoppings characterized by the reflection symmetry breaking. Topological nontrivi- ality is detected by analyzing effective Dirac Hamiltonian, and confirmed by numerical and analytical study of the emergence of topological edge states at the boundaries between topo- logically distinct regions. We have also discovered that a novel asymmetric edge current attributable to chirality can be excited without any involved phase shifts in input sources to pick up one of the pseudospin components.

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Keyword: topological system, honeycomb lattice, chirality

Date published: 2025-02-15

Publisher: Physical Society of Japan

Journal:

  • Journal of the Physical Society of Japan (ISSN: 00319015) vol. 94 issue. 2 024702

Funding:

  • Japan Society for the Promotion of Science JP21H01049
  • Japan Society for the Promotion of Science JP20K03844

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5471

First published URL: https://doi.org/10.7566/jpsj.94.024702

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Updated at: 2025-05-09 13:59:24 +0900

Published on MDR: 2025-05-09 16:21:38 +0900

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