First-principles study of the structures and electronic band properties of Bi2Te3{11̄5} nanoribbons
Source abstract
Abstract
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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Research context
OpenAlex topics: Topological Materials and Phenomena · Advanced Thermoelectric Materials and Devices · 2D Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Shaanxi Normal University 1 School of Physics and Information Technology, , Xi’an 710119, People’s Republic of China
XingTai University 2 School of physics and Electronic Engineering, , Xingtai 054001, Hebei province, People’s Republic of China
Guizhou University 3 Department of Electronic Science, Key Laboratory of Functional Composite Materials of Guizhou Province, , Guiyang, 550025, People’s Republic of China
Funding
Fundamental Research Funds for the Central University · National Natural Science Foundation of China
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