A high resolution fore-level photoemission investigation of 2D ordered Bi layers grown on Si(100)-(2 x 1) is presented. We study the Si 2p and Bi 5d core-levels at room temperature as a function of coverage and in the reconstructed phases. The different Bi structural configurations around the monolayer coverage and in the (2 x n)-reconstructed phase are derived from the core-level lineshape evolution. By following the Fermi level pinning, the presence of Bi-induced occupied electronic states close to the Si mid-gap is suggested. (C) 1999 Elsevier Science B.V. All rights reserved.
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Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, JapanJapan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan
Saitoh, Y
Kobayashi, K
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机构:Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan
Kobayashi, K
Fujimori, A
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Fujimori, A
Yamamura, Y
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Yamamura, Y
Koyano, M
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Koyano, M
Tsuji, T
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Tsuji, T
Katayama, S
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机构:Japan Atom Energy Res Inst, Synchrotron Radiat Res Ctr, Mikazuki, Hyogo 6795148, Japan