Tunable topological phase transition from nodal-line semimetal to Weyl semimetal by breaking symmetry

2021 ◽  
Vol 104 (23) ◽  
Author(s):  
Jing Li ◽  
Hailong Wang ◽  
Hui Pan
2021 ◽  
Vol 104 (20) ◽  
Author(s):  
D. F. Liu ◽  
Q. N. Xu ◽  
E. K. Liu ◽  
J. L. Shen ◽  
C. C. Le ◽  
...  

2019 ◽  
Vol 100 (20) ◽  
Author(s):  
Anmin Zhang ◽  
Xiaoli Ma ◽  
Changle Liu ◽  
Rui Lou ◽  
Yimeng Wang ◽  
...  

2019 ◽  
Vol 116 (51) ◽  
pp. 25530-25534 ◽  
Author(s):  
Toshiya Ideue ◽  
Motoaki Hirayama ◽  
Hiroaki Taiko ◽  
Takanari Takahashi ◽  
Masayuki Murase ◽  
...  

Recent progress in understanding the electronic band topology and emergent topological properties encourage us to reconsider the band structure of well-known materials including elemental substances. Controlling such a band topology by external field is of particular interest from both fundamental and technological viewpoints. Here we report possible signatures of the pressure-induced topological phase transition from a semiconductor to a Weyl semimetal in elemental tellurium probed by transport measurements. Pressure variation of the periods of Shubnikov–de Haas oscillations, as well as oscillation phases, shows an anomaly around the pressure theoretically predicted for topological phase transition. This behavior is consistent with the pressure-induced band deformation and resultant band-crossing effect. Moreover, effective cyclotron mass is reduced toward the critical pressure, potentially reflecting the emergence of massless linear dispersion. The present result paves the way for studying the electronic band topology in well-known compounds and topological phase transition by the external field.


Author(s):  
Jia-Fang Wu ◽  
Sha-Sha Ke ◽  
Yong Guo ◽  
Huai-Wu Zhang ◽  
Hai-Feng Lü

Pm-MoTe without inversion centers is a Type-II Weyl semimetal with eight Weyl points, which can transition to compensation semimetal under strain.


2017 ◽  
Vol 96 (6) ◽  
Author(s):  
C. Q. Xu ◽  
R. Sankar ◽  
W. Zhou ◽  
Bin Li ◽  
Z. D. Han ◽  
...  

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