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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2012, Volume 96, Issue 5, Pages 352–356
(Mi jetpl3222)
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This article is cited in 21 scientific papers (total in 21 papers)
CONDENSED MATTER
Natural sulfur-containing minerals as topological insulators with a wide band gap
I. V. Silkina, T. V. Menshchikovaa, M. M. Otrokova, S. V. Eremeevab, Yu. M. Koroteevab, M. G. Vergnioryc, V. M. Kuznetsova, E. V. Chulkovcd a Tomsk State University
b Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences
c Donostia International Physics Center
d Departamento de Física de Materiales, Facultad de Quimica, UPV/EHU, San Sebastian, Basque Country
Abstract:
The electronic structure of quaternary natural minerals PbBi$_2$Te$_2$S$_2$ (aleksite), Pb$_2$Bi$_2$Te$_2$S$_3$ (saddlebackite), and PbBi$_4$Te$_4$S$_3$ ($C$ 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.
Received: 25.07.2012
Citation:
I. V. Silkin, T. V. Menshchikova, M. M. Otrokov, S. V. Eremeev, Yu. M. Koroteev, M. G. Vergniory, V. M. Kuznetsov, E. V. Chulkov, “Natural sulfur-containing minerals as topological insulators with a wide band gap”, Pis'ma v Zh. Èksper. Teoret. Fiz., 96:5 (2012), 352–356; JETP Letters, 96:5 (2012), 322–325
Linking options:
https://www.mathnet.ru/eng/jetpl3222 https://www.mathnet.ru/eng/jetpl/v96/i5/p352
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