期刊
APPLIED PHYSICS LETTERS
卷 105, 期 12, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4896543
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资金
- Priority Research Centers Program through the National Research Foundation of Korea (NRF) [2009-0093823]
- Pioneer Research Center Program through the National Research Foundation of Korea (NRF) [2013008070]
Quantum size effect (QSE) in Bi nanowire is theoretically predicted to decrease band overlap energy resulting in semimetal-to-semiconductor transition. However, this effect has been rarely demonstrated on transport properties because of carrier-surface scattering and charge carriers induced from surface states of Bi. We report QSE on Shubnikov-de Haas (SdH) oscillations in a single-crystalline Bi nanowire with a diameter of 100 nm. The variation of intrinsic properties estimated using SdH oscillations indicates that the subband energy shift due to QSE. The enhanced effective mass of the electrons is consistent with the theoretical prediction pertaining to strong electron-hole coupling of Bi. (C) 2014 AIP Publishing LLC.
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