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Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe
Liu, Da-Yong1; Sun, Zhe2; Zou, Liang-Jian1,3
2017-02-13
Source PublicationNEW JOURNAL OF PHYSICS
Volume19
AbstractThe electronic structure and magnetism of a new magnetic intercalation compound (Li0.8Fe0.2)OHFeSe are investigated theoretically. The electronic structure calculations predict that the Fe in the (Li,Fe)OH intercalated layer is in a + 2 valence state, i.e. there is electron doping to the FeSe layer, resulting in the shrinking of the Fermi surface (FS) pocket around Gamma and a strong suppression of dynamical spin susceptibility at M in comparison with the bulk FeSe compound. The ground state of the FeSe layer is a striped antiferromagnetic (SAFM) metal, while the (Li,Fe)OH layer displays a very weak localized magnetism, with an interlayer ferromagnetic (FM) coupling between the FeSe and intercalated (Li,Fe)OH layers. Moreover, the (Li,Fe)OH is more than a block layer; it is responsible for enhancing the antiferromagnetic (AFM) correlation in the FeSe layer through interlayer magnetic coupling. We propose that the magnetic spacer layer introduces a tuning mechanism for spin fluctuations associated with superconductivity in iron-based superconductors.
SubtypeArticle
KeywordElectronic Structure Magnetic Structure Iron Selenides
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Sciences Foundation of China(11574315 ; National Sciences Foundation of China(11574315 ; 11274310 ; 11274310 ; 11474287 ; 11474287 ; 11190022) ; 11190022) ; National Sciences Foundation of China(11574315 ; National Sciences Foundation of China(11574315 ; 11274310 ; 11274310 ; 11474287 ; 11474287 ; 11190022) ; 11190022)
DOI10.1088/1367-2630/aa5a71
WOS KeywordHIGH-TEMPERATURE SUPERCONDUCTIVITY ; PHASE-DIAGRAM ; WANNIER FUNCTIONS ; SMFEASO1-XFX ; INSTABILITY
Indexed BySCI
Language英语
Funding OrganizationNational Sciences Foundation of China(11574315 ; National Sciences Foundation of China(11574315 ; 11274310 ; 11274310 ; 11474287 ; 11474287 ; 11190022) ; 11190022) ; National Sciences Foundation of China(11574315 ; National Sciences Foundation of China(11574315 ; 11274310 ; 11274310 ; 11474287 ; 11474287 ; 11190022) ; 11190022)
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000405920600002
Citation statistics
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33528
Collection中科院固体物理研究所
Affiliation1.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, POB 1129, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Anhui, Peoples R China
3.Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China
Recommended Citation
GB/T 7714
Liu, Da-Yong,Sun, Zhe,Zou, Liang-Jian. Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe[J]. NEW JOURNAL OF PHYSICS,2017,19.
APA Liu, Da-Yong,Sun, Zhe,&Zou, Liang-Jian.(2017).Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe.NEW JOURNAL OF PHYSICS,19.
MLA Liu, Da-Yong,et al."Coexistence of localized and itinerant magnetism in intercalated iron-selenide (Li,Fe)OHFeSe".NEW JOURNAL OF PHYSICS 19(2017).
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