Superconductivity in pressurized Rb0.8Fe2-ySe2-xTex
Gu, DC; Wu, Q; Zhou, YZ; Gao, PW; Guo, J; Zhang, C; Zhang, S; Jiang, S; Yang, K; Li, AG; Sun, LL; Zhao, ZX; Gu, DC (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
2015
发表期刊NEW JOURNAL OF PHYSICS
ISSN1367-2630
卷号17页码:
文章类型期刊文献
摘要We report the finding of pressure-induced elimination and reemergence of superconductivity in Rb0.8Fe2-ySe2-xTex (x = 0, 0.19 and 0.28) superconductors that belong to the family of A-245 superconductors (A = K, Rb, TlRb and Cs), characterized by the presence of an antiferromagnetic (AFM) long-ranged order phase with the superlattice structure of Fe-cavacies. In this study, we investigate the connections between superlattice, AFM phase and superconductivity via the combined approaches of Te doping and application of external pressure. Our data reveal that the superconductivity of the ambient-pressure superconducting phase (SC-I) and the AFM long-ranged order as well as the superconductivity of the pressure-induced phase (SC-II) in the host samples can be synchronously tuned by Te doping. At x = 0.4, the SC-I and AFM long-range ordered phases as well as the SC-II phase disappear together, indicating that the two superconducting phases have intrinsic connections with the AFM phase. Furthermore, in-situ synchrotron x-ray diffraction measurements indicate that the superlattice structure in the x = 0.4 sample still exists at ambient pressure, but collapses at the same pressure where the superlattice of the superconducting samples is destructed. These results provide new insight into understanding the physics of this type of superconductors.
语种英语
WOS记录号WOS:000359130600001
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25057
专题中科院上海应用物理研究所2011-2018年
通讯作者Gu, DC (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
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Gu, DC,Wu, Q,Zhou, YZ,et al. Superconductivity in pressurized Rb0.8Fe2-ySe2-xTex[J]. NEW JOURNAL OF PHYSICS,2015,17:—.
APA Gu, DC.,Wu, Q.,Zhou, YZ.,Gao, PW.,Guo, J.,...&Gu, DC .(2015).Superconductivity in pressurized Rb0.8Fe2-ySe2-xTex.NEW JOURNAL OF PHYSICS,17,—.
MLA Gu, DC,et al."Superconductivity in pressurized Rb0.8Fe2-ySe2-xTex".NEW JOURNAL OF PHYSICS 17(2015):—.
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