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JETP Letters

, Volume 105, Issue 8, pp 502–507 | Cite as

Effect of deformation on the electronic structure and topological properties of the AIIMg2Bi2 (AII = Mg,Ca,Sr,Ba) compounds

  • E. K. Petrov
  • I. V. Silkin
  • Yu. M. Koroteev
  • E. V. Chulkov
Condensed Matter

Abstract

The electronic structure and topological properties of the AIIMg2Bi2 (AII = Mg,Ca,Sr,Ba) compounds are theoretically studied with the use of exact exchange. It is found that the Mg3Bi2 compound in the equilibrium state is a semimetal, whereas three other compounds are semiconductors with a direct fundamental band gap. It is predicted that the uniaxial deformation of three-component compounds results in transitions to topologically nontrivial phases: topological insulator and topological and Dirac semimetals. Owing to such a rich variety of topologically nontrivial phases, these compounds may be of interest for further theoretical and experimental studies.

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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • E. K. Petrov
    • 1
    • 3
  • I. V. Silkin
    • 1
  • Yu. M. Koroteev
    • 1
    • 2
    • 3
  • E. V. Chulkov
    • 1
    • 3
    • 4
    • 5
  1. 1.Tomsk State UniversityTomskRussia
  2. 2.Institute of Strength Physics and Materials Science, Siberian BranchRussian Academy of SciencesTomskRussia
  3. 3.St. Petersburg State UniversitySt. PetersburgRussia
  4. 4.Centro de Física de Materiales (CFM)-Materials Physics Center (MPC)Centro Mixto CSIC–UPV/EHUSan Sebastián/Donostia, Basque CountrySpain
  5. 5.Departamento de Física de Materiales, Facultad de Ciencias QuímicasUniversidad del País VascoSebastián/Donostia, Basque CountrySpain

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