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Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2
Zhou, YZ; Jiang, S; Wu, Q; Sidorov, VA; Guo, J; Yi, W; Zhang, S; Wang, Z; Wang, HH; Cai, S; Yang, K; Jiang, S; Li, AG; Ni, N; Zhang, GM; Sun, LL; Zhao, ZX
2017
Source PublicationSCIENCE BULLETIN
ISSN2095-9273
Volume62Issue:12Pages:857-862
Subtype期刊论文
AbstractOne of the most strikingly universal features of the high-temperature superconductors is that the superconducting phase emerges in the close proximity of the antiferromagnetic phase, and the interplay between these two phases poses a long-standing challenge. It is commonly believed that, as the antiferromagnetic transition temperature is continuously suppressed to zero, there appears a quantum critical point, around which the existence of antiferromagnetic fluctuation is responsible for the development of the superconductivity. In contrast to this scenario, we report the observation of a bi-critical point identified at 2.88 GPa and 26.02 K in the pressurized high-quality single crystal Ca0.73La0.27FeAs2 by complementary in-situ high pressure measurements. At the critical pressure, we find that the antiferromagnetism suddenly disappears and superconductivity simultaneously emerges at almost the same temperature, and that the external magnetic field suppresses the superconducting transition temperature but hardly affects the antiferromagnetic transition temperature. (C) 2017 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
KeywordHigh-temperature Superconductivity
DOI10.1016/j.scib.2017.05.027
WOS KeywordHIGH-TEMPERATURE SUPERCONDUCTIVITY
Indexed BySCI
Language英语
WOS IDWOS:000405586000009
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28756
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Zhou, YZ,Jiang, S,Wu, Q,et al. Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2[J]. SCIENCE BULLETIN,2017,62(12):857-862.
APA Zhou, YZ.,Jiang, S.,Wu, Q.,Sidorov, VA.,Guo, J.,...&Zhao, ZX.(2017).Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2.SCIENCE BULLETIN,62(12),857-862.
MLA Zhou, YZ,et al."Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2".SCIENCE BULLETIN 62.12(2017):857-862.
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