Photoemission study of Zn1-xCoxO as a possible DMS

被引：10
作者：
Wi, SC
Kang, JS [1 ]
Kim, JH
Lee, SS
Cho, SB
Kim, BJ
Yoon, S
Suh, BJ
Han, SW
Kim, KH
Kim, KJ
Kim, BS
Song, HJ
Shin, HJ
Shim, JH
Min, BI
机构：
[1] Catholic Univ Korea, Dept Phys, Puchon 420743, South Korea
[2] Gyeongsang Natl Univ, Dept Phys, Chinju 660701, South Korea
[3] Pohang Inst Sci & Technol, Pohang Accelerator Lab, Pohang 790784, South Korea
[4] Pohang Inst Sci & Technol, Dept Phys, Pohang 790784, South Korea
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2004年 / 241卷 / 07期
关键词：
D O I：
10.1002/pssb.200304598
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report a photoemission spectroscopy (PES) and X-ray absorption spectroscopy (XAS) study for bulk Zn1-xCoxO samples (x = 0 and 0.1). Both the Co 2p XAS and the Co 2p core-level PES spectra show that the doped Co ions in Zn1-xCoxO are in the divalent Co2+ (d(7)) states under the tetrahedral symmetry. A Co 2p --> 3d resonant photoemission spectroscopy measurement shows that the Co 3d states lie near the top of the O 2p valence band. This work suggests that the doped Co ions in Zn1-xCoxO substitute properly for the Zn sites with Co2+ valence states. (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：1529 / 1532
页数：4
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