期刊
SCIENTIFIC REPORTS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-017-07211-x
关键词
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资金
- ERC MOMB project [320590]
- ERC TWINFUSYON project [692034]
- LNCMI-CNRS
- NSF [DMR-1255607]
- research project NCN UMO, Polska [2011/03/B/ST3/03362]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1255607] Funding Source: National Science Foundation
Despite intensive investigations of Bi2Se3 in past few years, the size and nature of the bulk energy band gap of this well-known 3D topological insulator still remain unclear. Here we report on a combined magneto-transport, photoluminescence and infrared transmission study of Bi2Se3, which unambiguously shows that the energy band gap of this material is direct and reaches Eg = (220 +/- 5) meV at low temperatures.
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