scholarly journals Voltage-tunable Majorana bound states in time-reversal symmetric bilayer quantum spin Hall hybrid systems

2019 ◽  
Vol 100 (16) ◽  
Author(s):  
F. Schulz ◽  
J. C. Budich ◽  
E. G. Novik ◽  
P. Recher ◽  
B. Trauzettel
Keyword(s):  
Hybrid Systems ◽  
Time Reversal ◽  
Bound States ◽  
Quantum Spin ◽  
Majorana Bound States ◽  
Quantum Spin Hall

scholarly journals Time-reversal-breaking induced quantum spin Hall effect

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Wei Luo ◽  
D. X. Shao ◽  
Ming-Xun Deng ◽  
W. Y. Deng ◽  
L. Sheng
Keyword(s):  
Hall Effect ◽  
Time Reversal ◽  
Quantum Spin ◽  
Spin Hall Effect ◽  
Quantum Spin Hall Effect ◽  
Quantum Spin Hall

scholarly journals Quantum spin Hall effect in bound states in continuum

2019 ◽  
Author(s):  
Gianluigi Zito ◽  
Silvia romano ◽  
Stefano Cabrini ◽  
Giuseppe Calafiore ◽  
Anna Chiara De Luca ◽  
...  
Keyword(s):  
Hall Effect ◽  
Bound States ◽  
Quantum Spin ◽  
Spin Hall Effect ◽  
Quantum Spin Hall Effect ◽  
Quantum Spin Hall

scholarly journals Observation of the quantum spin Hall effect up to 100 kelvin in a monolayer crystal

Science ◽  
2018 ◽  
Vol 359 (6371) ◽  
pp. 76-79 ◽  
Author(s):  
Sanfeng Wu ◽  
Valla Fatemi ◽  
Quinn D. Gibson ◽  
Kenji Watanabe ◽  
Takashi Taniguchi ◽  
...  
Keyword(s):  
Hall Effect ◽  
Time Reversal ◽  
Quantum Spin ◽  
Spin Hall Effect ◽  
Semiconductor Heterostructures ◽  
Topological Phases ◽  
Two Dimensional ◽  
Quantum Spin Hall Effect ◽  
Elastic Backscattering ◽  
Quantum Spin Hall

A variety of monolayer crystals have been proposed to be two-dimensional topological insulators exhibiting the quantum spin Hall effect (QSHE), possibly even at high temperatures. Here we report the observation of the QSHE in monolayer tungsten ditelluride (WTe2) at temperatures up to 100 kelvin. In the short-edge limit, the monolayer exhibits the hallmark transport conductance, ~e2/h per edge, where e is the electron charge and h is Planck’s constant. Moreover, a magnetic field suppresses the conductance, and the observed Zeeman-type gap indicates the existence of a Kramers degenerate point and the importance of time-reversal symmetry for protection from elastic backscattering. Our results establish the QSHE at temperatures much higher than in semiconductor heterostructures and allow for exploring topological phases in atomically thin crystals.

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