Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)(2)Te-3

doi:10.1038/ncomms9913

	Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)(2)Te-3
	Ye, Mao 1,2; Li, Wei 1,2; Zhu, Siyuan 3; Takeda, Yukiharu 4; Saitoh, Yuji 4; Wang, Jiajia5 ; Pan, Hong 6,7; Nurmamat, Munisa 3; Sumida, Kazuki 3; Ji, Fuhao 6,7; Liu, Zhen 6,7; Yang, Haifeng 1; Liu, Zhengtai 1; Shen, Dawei 1,2; Kimura, Akio 3; Qiao, Shan1,2,5 ; Xie, Xiaoming1,2,5
	2015-11
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
卷号	6
发表状态	已发表
DOI	10.1038/ncomms9913
摘要	Magnetically doped topological insulators, possessing an energy gap created at the Dirac point through time-reversal-symmetry breaking, are predicted to exhibit exotic phenomena including the quantized anomalous Hall effect and a dissipationless transport, which facilitate the development of low-power-consumption devices using electron spins. Although several candidates of magnetically doped topological insulators were demonstrated to show long-range magnetic order, the realization of the quantized anomalous Hall effect is so far restricted to the Cr-doped (Sb,Bi)(2)Te-3 system at extremely low temperature; however, the microscopic origin of its ferromagnetism is poorly understood. Here we present an element-resolved study for Cr-doped (Sb,Bi)(2)Te-3 using X-ray magnetic circular dichroism to unambiguously show that the long-range magnetic order is mediated by the p-hole carriers of the host lattice, and the interaction between the Sb(Te) p and Cr d states is crucial. Our results are important for material engineering in realizing the quantized anomalous Hall effect at higher temperatures.
收录类别	SCI
语种	英语
资助项目	JSPS KAKENHI[26247064]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000366378900015
出版者	NATURE PUBLISHING GROUP
WOS关键词	ABSORPTION-SPECTRA ; DIRAC-FERMION ; TRANSITION ; DICHROISM ; STATE
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/2094
专题	物质科学与技术学院物质科学与技术学院_特聘教授组_乔山组物质科学与技术学院_特聘教授组_谢晓明组物质科学与技术学院_科学装置(X)_同步辐射项目
通讯作者	Ye, Mao
作者单位	1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Shanghai Sci Res Ctr, Shanghai 201203, Peoples R China 3.Hiroshima Univ, Grad Sch Sci, Higashihiroshima 7398526, Japan 4.Japan Atom Energy Agcy, Quantum Beam Sci Ctr, Condensed Matter Sci Div, Sayo, Hyogo 6795148, Japan 5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China 6.Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China 7.Fudan Univ, Adv Mat Lab, Shanghai 200433, Peoples R China
推荐引用方式 GB/T 7714	Ye, Mao,Li, Wei,Zhu, Siyuan,et al. Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)(2)Te-3[J]. NATURE COMMUNICATIONS,2015,6.
APA	Ye, Mao.,Li, Wei.,Zhu, Siyuan.,Takeda, Yukiharu.,Saitoh, Yuji.,...&Xie, Xiaoming.(2015).Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)(2)Te-3.NATURE COMMUNICATIONS,6.
MLA	Ye, Mao,et al."Carrier-mediated ferromagnetism in the magnetic topological insulator Cr-doped (Sb,Bi)(2)Te-3".NATURE COMMUNICATIONS 6(2015).