Three- and two-dimensional topological insulators in Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5 layered compounds

I. V. Silkin, Yu M. Koroteev, S. V. Eremeev, G. Bihlmayer, E. V. Chulkov

Research output: Contribution to journalArticle

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Abstract

The electronic structure of ternary compounds Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5, which have a layered structure that consists of nine-layer atomic blocks separated by van der Waals gaps, has been theoretically studied. It has been shown that all studied compounds are three-dimensional topological insulators. The possibility of the existence of a two-dimensional topological insulator has been found in ultrathin (0001) Pb2Sb2Te5 and Pb2Bi2Te5 films. Oscillations of the ℤ2 topological invariant with an increase in the film thickness have been observed in the latter compound.

Original languageEnglish
Pages (from-to)217-221
Number of pages5
JournalJETP Letters
Volume94
Issue number3
DOIs
Publication statusPublished - Oct 2011
Externally publishedYes

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insulators
film thickness
electronic structure
oscillations

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Silkin, I. V., Koroteev, Y. M., Eremeev, S. V., Bihlmayer, G., & Chulkov, E. V. (2011). Three- and two-dimensional topological insulators in Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5 layered compounds. JETP Letters, 94(3), 217-221. https://doi.org/10.1134/S0021364011150112

Three- and two-dimensional topological insulators in Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5 layered compounds. / Silkin, I. V.; Koroteev, Yu M.; Eremeev, S. V.; Bihlmayer, G.; Chulkov, E. V.

In: JETP Letters, Vol. 94, No. 3, 10.2011, p. 217-221.

Research output: Contribution to journalArticle

Silkin, IV, Koroteev, YM, Eremeev, SV, Bihlmayer, G & Chulkov, EV 2011, 'Three- and two-dimensional topological insulators in Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5 layered compounds', JETP Letters, vol. 94, no. 3, pp. 217-221. https://doi.org/10.1134/S0021364011150112
Silkin, I. V. ; Koroteev, Yu M. ; Eremeev, S. V. ; Bihlmayer, G. ; Chulkov, E. V. / Three- and two-dimensional topological insulators in Pb2Sb2Te5, Pb2Bi2Te5, and Pb2Bi2Se5 layered compounds. In: JETP Letters. 2011 ; Vol. 94, No. 3. pp. 217-221.
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