Domain-wall, overlap, and topological insulators

Taro Kimura

研究成果: Article査読

抄録

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.

本文言語English
論文番号042
ジャーナルUnknown Journal
14-18-July-2015
出版ステータスPublished - 2015

ASJC Scopus subject areas

  • 一般

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