Domain-wall, overlap, and topological insulators

Research output: Contribution to journalArticle

Abstract

Topological insulators are a new class of materials which have gapped spectra in the bulk, but are accompanied by topologically protected gapless excitations at the surface (edge) of the system. These phenomena have a close relationship with symmetry and dimensionality of the system through quantum anomalies. We point out that such a surface state is a physical realization of the domain-wall/overlap fermion. From this point of view, we discuss its implications for experiments of topological insulators. We also discuss an unconventional overlap fermion, which is suggested by the "periodic table" of topological insulators and superconductors.

Original languageEnglish
Article number042
JournalUnknown Journal
Volume14-18-July-2015
Publication statusPublished - 2015

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Insulator
Domain Wall
Overlap
Fermions
Superconductor
Anomaly
Dimensionality
experiment
Table
Excitation
Symmetry
Experiment
Superconductivity

ASJC Scopus subject areas

  • General

Cite this

Domain-wall, overlap, and topological insulators. / Kimura, Taro.

In: Unknown Journal, Vol. 14-18-July-2015, 042, 2015.

Research output: Contribution to journalArticle

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