Journal
PHYSICAL REVIEW B
Volume 89, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.035101
Keywords
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Funding
- State Key Programs of China [2012CB921604, 2009CB929204]
- National Natural Science Foundation of China [11074043, 11274069, 61171011, 11227902]
- Robert A. Welch Foundation [E-1146]
- National Nuclear Security Administration of the U.S. Department of Energy at LANL [DE-AC52-06NA25396]
- U.S. Department of Energy Office of Basic Energy Sciences
- Chinese Academy of Sciences [XDB04010600]
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Based on the first-principles band structure calculations, we investigate the effects of hydrostatic pressure on the conventional insulator (CI) Sb2Se3 and predict that it undergoes a topological quantum phase transition from a CI to a nontrivial topological insulator at a critical pressure value. The pressure-induced topological quantum phase transition is confirmed by calculating the evolution of the bulk energy gap as a function of pressure, the inversion of energy band structure, and the Z(2) topological invariant, as well as the existence of the Dirac-like topological surface states. Our predictions can be tested by both spectroscopy and transport experiments.
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