Bulk- and Surface-Sensitive High-Resolution Photoemission Study of Two Mott-Hubbard Systems : SrVO3 and CaVO3
Physical Review Letters 96 巻 7 号
076402-1-076402-4 頁
2006-02-23 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Bulk- and Surface-Sensitive High-Resolution Photoemission Study of Two Mott-Hubbard Systems : SrVO3 and CaVO3
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| 作成者 |
Eguchi Ritsuko
Kiss Takayuki
Tsuda Shunsuke
Shimojima Takahiro
Mizokami Tomohiro
Yokoya Takayoshi
Chainani Ashish
Shin Shik
Inoue Isao H.
Togashi Tadashi
Watanabe Shuntaro
Zhang C. Q.
Chen C. T.
Arita Masashi
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| 収録物名 |
Physical Review Letters
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| 巻 | 96 |
| 号 | 7 |
| 開始ページ | 076402-1 |
| 終了ページ | 076402-4 |
| 抄録 |
We study the electronic structure of Mott-Hubbard systems SrVO3 and CaVO3 with bulk and surface-sensitive high-resolution photoemission spectroscopy, using a vacuum ultraviolet laser, synchrotron radiation, and a discharge lamp (hν=7–21 eV). A systematic suppression of the density of states (DOS) within ~0.2 eV of the Fermi level (EF) is found on decreasing photon energy, i.e., on increasing bulk sensitivity. The coherent band in SrVO3 and CaVO3 is shown to consist of surface and bulk-derived features, separated in energy. The stronger distortion on surface of CaVO3 compared to SrVO3 leads to a higher surface metallicity in the coherent DOS at EF, consistent with recent theory.
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| 著者キーワード |
photoemission
binding energy
photoelectron spectra
strontium compounds
calcium compounds
electronic density of states
Fermi level
strongly correlated electron systems
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2006-02-23 |
| 権利情報 |
Copyright (c) 2006 The American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.96.076402
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.96.076402
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