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Topological Phase Transition in 2D 1T′‐WSTe
Author(s) -
Li Jiabin,
Zhou Pan,
Zou Zhengchun,
Tan Rui,
Sun Lizhong,
Zhang Kaiwang
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000010
Subject(s) - topological insulator , topological order , topology (electrical circuits) , phase transition , insulator (electricity) , physics , condensed matter physics , mathematics , quantum mechanics , optoelectronics , quantum , combinatorics
The topological phase transition between normal and topological insulators is essential in topological mechanism analysis and search for new topological materials. Herein, on the basis of the well‐known monolayer 2D topological insulator 1T′‐WTe 2 , a new 2D material 1T′‐WSTe is constructed. It is a typical central inversion asymmetric 2D topological insulator. The fascinating feature of this material is that its low‐energy electronic structure is very similar to the inversion broken topological phase transition point. The first‐principles calculations reveal that the ±4% uniaxial strain can effectively turn the 2D material into topological insulator or normal insulator phases.