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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
2008
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号78期号:22页码:-
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.
部门归属[Ma, F; Xiang, T] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Ma, F; Lu, ZY] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China; [Xiang, T] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
关键词Superconductivity Instability
学科领域Physics
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收录类别SCI
WOS记录号WOS:000262245200085
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被引频次:181[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5420
专题理论物理所1978-2010年知识产出
通讯作者Ma, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
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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):-.
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