Topological, Valleytronic, and Optical Properties of Monolayer PbS

Wenhui Wan; Yugui Yao; Liangfeng Sun; Cheng Cheng Liu; Fan Zhang

doi:10.1002/adma.201604788

Topological, Valleytronic, and Optical Properties of Monolayer PbS

Wenhui Wan, Yugui Yao^*, Liangfeng Sun, Cheng Cheng Liu, Fan Zhang

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Researchers performed first-principle calculations using the more accurate Heyd–Scuseria–Ernzerhof (HSE) hybrid functional to examine the band structures of lead sulfide (PbS) few layers, with a focus on the monolayer. They revealed that the band gaps of few layers exhibited even–odd layer-dependent oscillations without band inversions. They also demonstrated that the uniaxial and biaxial compressive strains can tune the monolayer to a 2D topological insulator (TI) and topological crystalline insulators (TCI).

Original language	English
Article number	1604788
Journal	Advanced Materials
Volume	29
Issue number	10
DOIs	https://doi.org/10.1002/adma.201604788
Publication status	Published - 14 Mar 2017

Keywords

PbS
monolayers
optical
topological

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10.1002/adma.201604788

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Wan, W., Yao, Y., Sun, L., Liu, C. C., & Zhang, F. (2017). Topological, Valleytronic, and Optical Properties of Monolayer PbS. Advanced Materials, 29(10), Article 1604788. https://doi.org/10.1002/adma.201604788

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AU - Sun, Liangfeng

AU - Liu, Cheng Cheng

AU - Zhang, Fan

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KW - topological

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Topological, Valleytronic, and Optical Properties of Monolayer PbS

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Keywords

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