Candidates for topological insulators: Pb-based chalcogenide series

Hosub Jin, Jung Hwan Song, Arthur J. Freeman, Mercouri G. Kanatzidis

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

We theoretically predict that the series of Pb-based layered chalcogenides, PbnBi2Sen+3and PbnSb 2Ten+3, are possible new candidates for topological insulators, and the topological phases are changed from a topological insulator to a band insulator with increasing n. Among the new topological insulators, we found a large bulk band gap of 0.40 eV in PbBi2Se4, and that of Pb2Sb2Te5 is located near the phase boundary between a trivial and a nontrivial topological insulator, which raises the possibility of tuning the topological phase by changing the external parameters.

Original languageEnglish
Article number041202
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number4
DOIs
Publication statusPublished - Jan 31 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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