Time-reversal-invariant topological superconductivity in n -doped BiH

Time-reversal-invariant topological superconductivity in n -doped BiH
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n 掺杂 BiH 中的时间反转拓扑超导

DOI:
10.1103/physrevb.91.134514
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发表时间:
2014-06
期刊:
影响因子:
3.7
通讯作者:
Dung-Hai Lee
Dung-Hai Lee
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Cheng-Cheng Liu;Yu-Zhong Zhang;Yugui Yao;Dung-Hai Lee

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内禀和对称性保护的拓扑态是近年来凝聚态物理研究的热点。特别地,时间反演对称性保护的费米子拓扑绝缘体已被理论预测和实验验证。然而,尽管有大量的实验和理论工作,时间反演不变的拓扑超导性的确切证据仍然缺乏。在这里,我们提出,电子掺杂氢化的单层双层铋,即BiH,将表现出时间反转不变的拓扑超导性。如果实验证实,这种材料将构成TRI拓扑超导体的第一个例子。
Intrinsic and symmetry protected topological states have attracted lots of interest in condensed matter physics recently. In particular, time reversal symmetry protected fermion topological insulators have been theoretically predicted and experimentally verified. However despite considerable experimental and theoretical works, definitive evidence for time reversal invariant topological superconductivity is still lacking. Here we propose that upon electron doping the hydrogenated single bilayer Bi, namely BiH, will exhibit time reversal invariant topological superconductivity. If confirmed experimentally this material will constitute the first example of TRI topological superconductor.
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