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 language | English |
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Pages (from-to) | 322-325 |
Number of pages | 4 |
Journal | JETP Letters |
Volume | 96 |
Issue number | 5 |
DOIs | |
Publication status | Published - Nov 2012 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)