Topological Phase Diagram of Semimagnetic Semiconductor Pb1-x-ySnxMnyTe |
| A. Lusakowskia, P. Bogusławskia, T. Storya, b
aInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02668 Warsaw, Poland bInternational Research Centre MagTop, Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, PL-02668 Warsaw, Poland |
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| Local density approximation is used to study the band structure of Pb1-xMnxTe and Pb1-x-ySnxMnyTe alloys with about 6% of cation sites occupied by magnetic Mn ions. The topological phase diagram as a function of chemical composition, hydrostatic pressure, and magnetization is presented. Three phases: normal, topological crystalline insulator, and Weyl semimetal are identified. The possibility of transitions between these phases induced by the external magnetic field and crystal deformation is analysed. |
DOI:10.12693/APhysPolA.141.156 topics: semimagnetic semiconductors, topological insulators |