Local atomic and electronic structures in ferromagnetic topological insulator Cr-doped (BixSb1-x)(2)Te-3 studied by XAFS and ab initio calculations

doi:10.1103/PhysRevB.92.100101

	Local atomic and electronic structures in ferromagnetic topological insulator Cr-doped (BixSb1-x)(2)Te-3 studied by XAFS and ab initio calculations
	Liu, Zhen 1; Wei, Xinyuan 1; Wang, Jiajia 1; Pan, Hong 1; Ji, Fuhao 1; Ye, Mao 2; Yang, Zhongqin 1; Qiao, Shan2,3
	2015-09-21
发表期刊	PHYSICAL REVIEW B
ISSN	1098-0121
卷号	92 期号:10
发表状态	已发表
DOI	10.1103/PhysRevB.92.100101
摘要	The local atomic and electronic structures around the dopants in Cr-doped (BixSb1-x)(2)Te-3 are studied by x-ray absorption fine structure (XAFS) measurements and first-principles calculations. Both Cr and Bi are confirmed substituting Sb sites (Cr-Sb and Bi-Sb). The six nearest Te atoms around Cr move towards Cr and shorten the Cr-Te bond lengths to 2.76 angstrom and 2.77 angstrom for x = 0.1 and x = 0.2, respectively. Importantly, we reveal the hybridization between the Sb/Te p states and Cr d states by the presence of a pre-edge peak at Cr K-absorption edge, which is also supported by our ab initio calculations. These findings provide important clues to understand the mechanism of ferromagnetic order in this system with quantum anomalous Hall effect.
收录类别	SCI
语种	英语
资助项目	Chinese Academy of Sciences[XDB04010100]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000361659600001
出版者	AMER PHYSICAL SOC
WOS关键词	TOTAL-ENERGY CALCULATIONS ; WAVE BASIS-SET ; TRANSITION ; METALS
原始文献类型	Article
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/2134
专题	物质科学与技术学院_特聘教授组_乔山组
通讯作者	Liu, Zhen
作者单位	1.Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China 2.Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zhen,Wei, Xinyuan,Wang, Jiajia,et al. Local atomic and electronic structures in ferromagnetic topological insulator Cr-doped (BixSb1-x)(2)Te-3 studied by XAFS and ab initio calculations[J]. PHYSICAL REVIEW B,2015,92(10).
APA	Liu, Zhen.,Wei, Xinyuan.,Wang, Jiajia.,Pan, Hong.,Ji, Fuhao.,...&Qiao, Shan.(2015).Local atomic and electronic structures in ferromagnetic topological insulator Cr-doped (BixSb1-x)(2)Te-3 studied by XAFS and ab initio calculations.PHYSICAL REVIEW B,92(10).
MLA	Liu, Zhen,et al."Local atomic and electronic structures in ferromagnetic topological insulator Cr-doped (BixSb1-x)(2)Te-3 studied by XAFS and ab initio calculations".PHYSICAL REVIEW B 92.10(2015).