Series of topological phase transitions in TiTe2under strain | Zendy

Qingyun Zhang | Zendy; Yingchun Cheng | Zendy; Udo Schwingenschlögl | Zendy

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Series of topological phase transitions in TiTe2under strain

Author(s) -

Qingyun Zhang,

Yingchun Cheng,

Udo Schwingenschlögl

Publication year - 2013

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.88.155317

Subject(s) - hydrostatic pressure , brillouin zone , series (stratigraphy) , hydrostatic equilibrium , phase transition , phase (matter) , physics , materials science , topology (electrical circuits) , condensed matter physics , crystallography , thermodynamics , combinatorics , chemistry , geology , mathematics , quantum mechanics , paleontology

First-principles calculations are performed to investigate the topological properties of TiTe2 under hydrostatic pressure, uniaxial strain, and biaxial strain. It is found that the system is unusually accessible to strain effects and the first compound that under hydrostatic pressure (up to experimentally reasonable 30 GPa) is subject to a series of four topological phase transitions, which are related to band inversions at different points of the Brillouin zone. Therefore, TiTe2 enables experimental access to all these transitions in a single compound

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