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题名: Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal
作者: Ma, Fengjie ;  Lu, Zhong-Yi
刊名: PHYSICAL REVIEW B
出版日期: 2008
卷号: 78, 期号:3, 页码:-
关键词: FCC-FE ;  SUPERCONDUCTIVITY ;  APPROXIMATION ;  SYSTEM
学科分类: Physics
通讯作者: Ma, FJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
部门归属: [Ma, FJ] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Lu, ZY] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
英文摘要: LaFeAsO is a parent compound of iron-based F-doped superconductors. An understanding of its ground phase and electronic structure is a precondition to understanding the underlying superconductivity mechanism. Our study shows that LaFeAsO is a quasi-two-dimensional antiferromagnetic semimetal with most carriers being electrons and with a magnetic moment of 2.3 mu(B) located around each Fe atom on the Fe-Fe square lattice. Physically, this is a commensurate antiferromagnetic spin-density wave due to the Fermi-surface nesting. The observed superconduction after the F doping happens on the Fe-Fe layer suggesting a new superconductivity mechanism mediated by spin fluctuations.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000258190300011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5509
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Ma, Fengjie,Lu, Zhong-Yi. Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal[J]. PHYSICAL REVIEW B,2008,78(3):-.
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