Correlation between intercalated magnetic layers and superconductivity in pressurized EuFe2(As0.81P0.19)2
文献类型：期刊论文
| 作者 | Guo J.; Q. Wu; J. Feng; G. Chen; T. Kagayama; C. Zhang; W. Yi; Y. Li; X. Li; J. Liu |
| 刊名 | EPL
 |
| 出版日期 | 2015 |
| 卷号 | 111期号:5页码:57007 |
| 英文摘要 | 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 |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| WOS记录号 | WOS:000364539100031 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/228971]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：高能物理研究所
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