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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
发表期刊EPL
卷号111期号:5页码:57007
摘要We 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
文章类型Article
学科领域Physics
DOI10.1209/0295-5075/111/57007
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000364539100031
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228971
专题多学科研究中心
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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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