First-principles study of the structures and electronic band properties of Bi2Te3{11̄5} nanoribbons | Zendy

Jing Ma | Zendy; Jianping Zhou | Zendy; Jia Yang | Zendy; Hongsheng Zhao | Zendy; XiaoMing Chen | Zendy; Chaoyong Deng | Zendy

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First-principles study of the structures and electronic band properties of Bi2Te3{11̄5} nanoribbons

Author(s) -

Jing Ma,

Jianping Zhou,

Jia Yang,

Hongsheng Zhao,

XiaoMing Chen,

Chaoyong Deng

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4922604

Subject(s) - ribbon , gapless playback , thermoelectric effect , condensed matter physics , band gap , topological insulator , materials science , insulator (electricity) , hydrothermal circulation , density functional theory , electronic band structure , electronic structure , optoelectronics , chemistry , physics , computational chemistry , composite material , geology , thermodynamics , seismology

Bi2Te3 is known to be an excellent thermoelectric material as well as a topological insulator. We prepare Bi2Te3{011̄5}nanosheets with a hydrothermal method and find that the interplanar spacings have a little difference though they belong to a same family of crystal planes. Then, we investigate the structural and electronic properties of Bi2Te3{011̄5}nanoribbons with one to six atomic layers by density-functional theory. The results indicate that the nanoribbons exhibit insulator with a band gap except the three-atomic-layer ribbon, which unexpectedly shows a metallic behavior with a gapless band structure

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