Carriers dependence of the magnetic properties in magnetic topological insulator Sb1.95−xBixCr0.05Te3
Carriers dependence of the magnetic properties in magnetic topological insulator Sb1.95−xBixCr0.05Te3
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DOI：
10.1063/1.4746404
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发表时间：
2012-08
影响因子：
4
通讯作者：
Hsby Li;Y. R. Song;M. Yao;Fang Yang;L. Miao;F. Zhu;Canhua Liu;C. Gao;D. Qian;Xin-Xin Yao-Xin;J. Jia;Y. Shi;Di Wu
中科院分区：
文献类型：
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作者：
Hsby Li;Y. R. Song;M. Yao;Fang Yang;L. Miao;F. Zhu;Canhua Liu;C. Gao;D. Qian;Xin-Xin Yao-Xin;J. Jia;Y. Shi;Di Wu
研究了Sb1.95−xBixCr0.05Te3单晶的体载流子密度和磁性能。我们发现，载流子浓度可以通过铋的替代来调节。居里温度和磁矩都与载流子密度密切相关，这表明掺铬Sb2Te3磁性拓扑绝缘体中存在本征铁磁性，这对于自旋相关的应用是非常重要的。
Bulk carrier density and magnetic properties of Sb1.95−xBixCr0.05Te3 single crystals were studied. We found that the carrier density can be tuned by Bi substitution. Both the Curie temperature and magnetic moments are strongly related to the carrier density, which suggests the existence of intrinsic ferromagnetism in Cr-doped Sb2Te3 magnetic topological insulator that is very important for spin-related applications.