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Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2
Guo J.; Q. Wu; J. Feng; G. Chen; T. Kagayama; C. Zhang; W. Yi; Y. Li; X. Li; J. Liu; Z. Jiang; X. Wei; Y. Huang; K. Shimizhu; L. Sun; Z. Zhao; Li YC(李延春); Li XD(李晓东); Liu J(刘景)
2015
Source PublicationEPL
ISSN0295-5075
EISSN1286-4854
Volume111Issue:5Pages:57007
SubtypeArticle
AbstractWe report comprehensive high-pressure studies on the correlation between intercalated magnetic layers and superconductivity in a EuFe2(As0.81P0.19)(2) single crystal through in situ high-pressure resistance, specific-heat, X-ray diffraction and X-ray absorption measurements. We find that an unconfirmed magnetic order of the intercalated layers coexists with superconductivity in a narrow pressure range 0-0.5GPa, and then it converts to a ferromagnetic (FM) order at pressure above 0.5GPa, where its superconductivity is absent. The obtained temperature-pressure phase diagram clearly demonstrates that the unconfirmed magnetic order can emerge from the superconducting state. In stark contrast, the superconductivity cannot develop from the FM state that is evolved from the unconfirmed magnetic state. High-pressure X-ray absorption (XAS) measurements reveal that the pressure-induced enhancement of Eu's mean valence plays an important role in suppressing the superconductivity and tuning the transition from the unconfirmed magnetic state to a FM state. The unusual interplay among valence state of Eu ions, magnetism and superconductivity under pressure may shed new light on understanding the role of the intercalated magnetic layers in Fe-based superconductors. Copyright (C) EPLA, 2015
Subject AreaPhysics
DOI10.1209/0295-5075/111/57007
Indexed BySCI ; ADS
Language英语
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
WOS IDWOS:000364539100031
ADS Bibcode2015EL....11157007G
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015EL....11157007G
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015EL....11157007G/citations
Citation statistics
Cited Times:5 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228971
Collection多学科研究中心
Recommended Citation
GB/T 7714
Guo J.,Q. Wu,J. Feng,et al. Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2[J]. EPL,2015,111(5):57007.
APA Guo J..,Q. Wu.,J. Feng.,G. Chen.,T. Kagayama.,...&刘景.(2015).Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2.EPL,111(5),57007.
MLA Guo J.,et al."Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2".EPL 111.5(2015):57007.
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