論文

査読有り
2013年6月

Gapped Energy Spectra around the Dirac Node at the Surface of a Three-Dimensional Topological Insulator in the Presence of the Time-Reversal Symmetry

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
  • Tetsuro Habe
  • ,
  • Yasuhiro Asano

82
6
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.7566/JPSJ.82.064704
出版者・発行元
PHYSICAL SOC JAPAN

. We discuss the excitation spectra around the Dirac node on a surface of a three-dimensional topological insulator. By using the diagrammatic expansion, we show that the coupling of an electron with the gauge field in the presence of impurity scatterings opens a gap around the Dirac node. The results are consistent with a recent experimental finding by Sato et al. [Nat. Phys. 7 (2011) 840]. We also discuss the consistency between the present results and the bulk-boundary correspondence of the topological insulator in the presence of time reversal symmetry. The conclusion can be applied to any two-dimensional massless fermions.


リンク情報
DOI
https://doi.org/10.7566/JPSJ.82.064704
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000319809400035&DestApp=WOS_CPL

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