2014年
Effect of acceptor co-doping on magnetism and electronic states in ferromagnetic semiconductor (Zn,Cr)Te
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 11, NO 7-8
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- 巻
- 11
- 号
- 7-8
- 開始ページ
- 1324
- 終了ページ
- 1327
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- DOI
- 10.1002/pssc.201300755
- 出版者・発行元
- WILEY-V C H VERLAG GMBH
The magnetic properties and the electronic states were investigated for a magnetic semiconductor (Zn,Cr)Te co-doped nitrogen (N) as an acceptor impurity. A series of N-doped Zn1xCrxTe thin films with Cr compositions in the range of x = 0.060.09 and N concentrations in the range of [N] = 10(18-)10(20) cm(3) were grown by molecular beam epitaxy (MBE), and the magnetization measurement using superconducting quantum interference device (SQUID) magnetometer and the X-ray absorption fine structure (XAFS) measurements were performed. As a result, the disappearance of ferromagnetic behaviors and the change in X-ray absorption near edge structure (XANES) spectra were observed at almost the same nitrogen concentration around [N] = 1 x 10(20) cm3. This correlated change in the magnetic properteis and the Cr electronic states was discussed in relation to a decrease of the electron density in the 3d impurity level due to the N co-doping. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
- リンク情報
- ID情報
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- DOI : 10.1002/pssc.201300755
- ISSN : 1862-6351
- Web of Science ID : WOS:000343762100039