Superconductivity in pressurized Rb0.8Fe2-ySe2-xTex

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	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
ISSN	1367-2630
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
引用统计
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.
推荐引用方式 GB/T 7714	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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