Natural sulfur-containing minerals as topological insulators with a wide band gap

I. V. Silkin, T. V. Menshchikova, M. M. Otrokov, S. V. Eremeev, Yu M. Koroteev, M. G. Vergniory, V. M. Kuznetsov, E. V. Chulkov

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17 Citations (Scopus)

Abstract

The electronic structure of quaternary natural minerals PbBi 2Te 2S 2 (aleksite), Pb 2Bi 2Te 2S 3 (saddlebackite), and PbBi 4Te 4S 3 (C phase) has been theoretically studied. These compounds have a layered structure: aleksite and saddlebackite are formed by seven- and nine-layer blocks, respectively, and C phase consists of five- and seven-layer blocks separated by van der Waals gaps. It has been shown that all studied materials are three-dimensional topological insulators with a wide band gap in the electronic spectrum and have a high spin polarization. For these reasons, they are promising for applications.

Original languageEnglish
Pages (from-to)322-325
Number of pages4
JournalJETP Letters
Volume96
Issue number5
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Silkin, I. V., Menshchikova, T. V., Otrokov, M. M., Eremeev, S. V., Koroteev, Y. M., Vergniory, M. G., Kuznetsov, V. M., & Chulkov, E. V. (2012). Natural sulfur-containing minerals as topological insulators with a wide band gap. JETP Letters, 96(5), 322-325. https://doi.org/10.1134/S0021364012170158