書誌事項
- タイトル別名
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- Development of High-resolution Spin-resolved Photoemission Spectrometer and Its Application for Study of Surface Rashba Effects
- コウブンカイノウ スピン ブンカイ コウデンシ ブンコウ ソウチ ノ カイハツ ト ヒョウメン ラシュバ コウカ ノ ケンキュウ
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抄録
We have developed an ultrahigh-resolution spin-resolved photoemission spectrometer equipped with a highly efficient mini Mott detector and an intense xenon plasma discharge lamp. Three-dimensional spin-polarization is determined by using a 90o electron deflector situated between the hemispherical electron-energy analyzer and the Mott detector. The spectrometer achieves the energy resolution of 0.9 and 8 meV for non-spin-resolved and spin-resolved modes, respectively. By using the newly developed spectrometer, we have performed spin-and angle-resolved photoemission spectroscopy of bismuth thin film on Si(111) to investigate the spin structure of surface states. Unlike the normal Rashba splitting, the magnitude of the in-plane spin polarization is asymmetric across the zone center between the two elongated surface hole pockets. More surprisingly, we observed a giant out-of-plane spin polarization as large as the in-plane counterpart which switches the sign across the Γ−-M− line. We discuss the present finding in terms of the breaking of time reversal symmetry and the many-body effects.
収録刊行物
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- 表面科学
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表面科学 33 (3), 165-171, 2012
公益社団法人 日本表面科学会
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詳細情報 詳細情報について
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- CRID
- 1390001206459700608
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- NII論文ID
- 130004486737
- 10030443468
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- NII書誌ID
- AN00334149
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- COI
- 1:CAS:528:DC%2BC38XovVWjtr4%3D
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- ISSN
- 18814743
- 03885321
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- NDL書誌ID
- 023589492
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
