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- Akari Takayama
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
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- Takafumi Sato
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
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- Seigo Souma
- WPI Research Center, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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- Tamio Oguchi
- Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
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- Takashi Takahashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
書誌事項
- 公開日
- 2012-03-30
- 資源種別
- journal article
- DOI
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- 10.1021/nl2035018
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
We performed a spin- and angle-resolved photoemission spectroscopy of bismuth ultrathin film on Si(111) with various film thickness d. We found that the spin polarization of spin-split Rashba surface states near the Brillouin-zone boundary, which is high (0.7) at d = 40 BL (bilayers), is gradually reduced on decreasing d and almost vanishes at d = 8 BL. This finding provides a novel method to generate spin-polarized electrons with tunable spin-polarization.
収録刊行物
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- Nano Letters
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Nano Letters 12 (4), 1776-1779, 2012-03-30
American Chemical Society (ACS)
