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
发表期刊SCIENCE BULLETIN
ISSN2095-9273
卷号62期号:12页码:857-862
文章类型期刊论文
摘要One 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.
关键词High-temperature Superconductivity
DOI10.1016/j.scib.2017.05.027
关键词[WOS]HIGH-TEMPERATURE SUPERCONDUCTIVITY
收录类别SCI
语种英语
WOS记录号WOS:000405586000009
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28756
专题中科院上海应用物理研究所2011-2018年
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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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