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Literature DB >> 27115098

On the Quantum Spin Hall Gap of Monolayer 1T'-WTe2.

Feipeng Zheng^1,2, Chaoyi Cai^1,2, Shaofeng Ge^1,2, Xuefeng Zhang³, Xin Liu^1,2, Hong Lu^1,2, Yudao Zhang^1,2, Jun Qiu^1,2, Takashi Taniguchi⁴, Kenji Watanabe⁴, Shuang Jia^1,2, Jingshan Qi⁵, Jian-Hao Chen^1,2, Dong Sun^1,2, Ji Feng^1,2.

Abstract

Positive quantum spin Hall gap in mono-layer 1T'-WTe2 is consistently supported by density-functional theory calculations, ultrafast pump-probe, and electrical transport measurements. It is argued that monolayer 1T'-WTe2 , which was predicted to be a semimetallic quantum spin Hall material, is likely a truly 2D quantum spin Hall insulator with a positive quantum spin Hall gap.

Entities: Disease

Keywords: Schottcky junctions; density functional theory; quantum spin Hall effect; ultra-fast spectroscopy

Year: 2016 PMID： 27115098 DOI： 10.1002/adma.201600100

Source DB: PubMed Journal: Adv Mater ISSN： 0935-9648 Impact factor: 30.849

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Cited

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