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题名: Electronic structures of ternary iron arsenides AFe(2)As(2) (A = Ba, Ca, or Sr)
作者: Ma, Feng-jie ;  Lu, Zhong-yi ;  Xiang, Tao
刊名: FRONTIERS OF PHYSICS IN CHINA
出版日期: 2010
卷号: 5, 期号:2, 页码:150-160
学科分类: Physics
通讯作者: Ma, FJ , Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
部门归属: [Ma, FJ; Lu, ZY] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China; [Ma, FJ; Xiang, T] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Xiang, T] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
英文摘要: We have studied the electronic and magnetic structures of the ternary iron arsenides AFe(2)As(2) (A = Ba, Ca, or Sr) using the first-principles density functional theory. The ground states of these compounds are in a collinear antiferromagnetic order, resulting from the interplay between the nearest and the next-nearest neighbor superexchange antiferromagnetic interactions bridged by As 4p orbitals. The correction from the spin-orbit interaction to the electronic band structure is given. The pressure can reduce dramatically the magnetic moment and diminish the collinear antiferromagnetic order. Based on the calculations, we propose that the low energy dynamics of these materials can be described effectively by a t-J(H)-J(1)-J(2)-type model [arXiv: 0806.3526v2, 2008].
资助者: National Natural Science Foundation of China; Ministry of Science and Technology, China
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000280414400004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5097
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Recommended Citation:
Ma, Feng-jie,Lu, Zhong-yi,Xiang, Tao. Electronic structures of ternary iron arsenides AFe(2)As(2) (A = Ba, Ca, or Sr)[J]. FRONTIERS OF PHYSICS IN CHINA,2010,5(2):150-160.
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