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题名: Superconductivity mediated by the antiferromagnetic spin wave in chalcogenide iron-based superconductors
作者: Zhang, GM ;  Lu, ZY ;  Xiang, T
刊名: PHYSICAL REVIEW B
出版日期: 2011
卷号: 84, 期号:5, 页码:52502
关键词: COEXISTENCE
学科分类: Physics
通讯作者: Zhang, GM (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
部门归属: [Zhang, G. M.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China; [Lu, Z. Y.] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China; [Xiang, T.] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; [Xiang, T.] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: The ground state of K(0.8+x)Fe(1.6+y)Se(2) and other iron-based selenide superconductors are doped antiferromagnetic semiconductors. We propose that the low energy physics of this system is governed by a model Hamiltonian of interacting electrons with onsite ferromagnetic exchange interactions and intersite superexchange interactions. We have derived the effective pairing potential of electrons under the linear spin-wave approximation and shown that the superconductivity can be driven by mediating coherent spin-wave excitations in these materials. Our work provides a natural account for the coexistence of superconducting and antiferromagnetic long range orders observed by neutron scattering and other experiments.
资助者: NSFC; MOST of China
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000293553100002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14293
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Zhang, GM,Lu, ZY,Xiang, T. Superconductivity mediated by the antiferromagnetic spin wave in chalcogenide iron-based superconductors[J]. PHYSICAL REVIEW B,2011,84(5):52502.
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