Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO

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	Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO
	Ma, Fengjie; Lu, Zhong-Yi; Xiang, Tao; Ma, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
刊名	PHYSICAL REVIEW B
	2008
卷号	78 期号:22 页码:-
关键词	Superconductivity Instability
ISSN号	1098-0121
英文摘要	From the first-principles calculations, we have studied the electronic and magnetic structures of LaFeAsO. It is found that a large magnetic moment of similar to 2.6 mu(B) is located around each Fe ion, embedded in the environment of itinerant electrons. In the ground state, these local Fe moments are in collinearly antiferromagnetic order, resulting from the interplay between the strong nearest- and next-nearest-neighbor superexchange antiferromagnetic interactions bridged by As atoms. The structure transition observed by the neutron scattering is shown to be magnetically driven. Our study suggests that the antiferromagnetic fluctuation plays an important role in Fe-based superconductors. This sheds light on the understanding of the pairing mechanism in these materials.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000262245200085
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5420]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Ma, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Ma, Fengjie,Lu, Zhong-Yi,Xiang, Tao,et al. Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO[J]. PHYSICAL REVIEW B,2008,78(22):-.
APA	Ma, Fengjie,Lu, Zhong-Yi,Xiang, Tao,&Ma, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.(2008).Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO.PHYSICAL REVIEW B,78(22),-.
MLA	Ma, Fengjie,et al."Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO".PHYSICAL REVIEW B 78.22(2008):-.