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Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal
Ma, Fengjie; Lu, Zhong-Yi; Ma, FJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
2008
发表期刊PHYSICAL REVIEW B
ISSN1098-0121
卷号78期号:3页码:-
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.
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
关键词Fcc-fe Superconductivity Approximation System
学科领域Physics
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收录类别SCI
WOS记录号WOS:000258190300011
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被引频次:184[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/311006/5509
专题理论物理所1978-2010年知识产出
通讯作者Ma, FJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
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Ma, Fengjie,Lu, Zhong-Yi,Ma, FJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China. Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal[J]. PHYSICAL REVIEW B,2008,78(3):-.
APA Ma, Fengjie,Lu, Zhong-Yi,&Ma, FJ , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.(2008).Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal.PHYSICAL REVIEW B,78(3),-.
MLA Ma, Fengjie,et al."Iron-based layered compound LaFeAsO is an antiferromagnetic semimetal".PHYSICAL REVIEW B 78.3(2008):-.
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