Clock-symmetric non-Hermitian second-order topological insulator

Motohiko Ezawa ()
Additional contact information
Motohiko Ezawa: University of Tokyo

The European Physical Journal B: Condensed Matter and Complex Systems, 2022, vol. 95, issue 6, 1-10

Abstract: Abstract We consider a breathing Kagome lattice with complex hoppings by imposing $$ \mathbb {Z}_{3}$$ Z 3 clock symmetry in the complex-energy plane. It is a non-Hermitian generalization of the second-order topological insulator characterized by the emergence of topological corner states. We construct topological corner states with the $$\mathbb {Z}_{3}$$ Z 3 clock-symmetric model. It is also shown that the model is realized in an electric circuit properly designed, where corner states are observed by impedance resonance. We also construct the $$\mathbb {Z}_{4}$$ Z 4 and $$\mathbb {Z}_{6}$$ Z 6 symmetric models on breathing square and honeycomb lattices, respectively. Graphic abstract

Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1140/epjb/s10051-022-00364-3 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:95:y:2022:i:6:d:10.1140_epjb_s10051-022-00364-3

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/s10051-022-00364-3

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().