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Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO
文献类型：期刊论文
| 作者 | Ma, Fengjie; Lu, Zhong-Yi; Xiang, Tao ; Ma, F , Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 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 |
| 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):-. |
入库方式： OAI收割
来源：理论物理研究所
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