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Observation of a bi-critical point between antiferromagnetic and superconducting phases in pressurized single crystal Ca0.73La0.27FeAs2.
Zhou, Yazhou; Jiang, Shan; Wu, Qi; Sidorov, Vladimir A; Guo, Jing; Yi, Wei; Zhang, Shan; Wang, Zhe; Wang, Honghong; Cai, Shu; Yang, Ke; Jiang, Sheng; Li, Aiguo; Ni, Ni; Zhang, Guangming; Sun, Liling; Zhao, Zhongxian.
Afiliación
  • Zhou Y; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Jiang S; Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA.
  • Wu Q; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Sidorov VA; Institute for High Pressure Physics, Russian Academy of Sciences, 142190 Troitsk, Moscow, Russia.
  • Guo J; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Yi W; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Zhang S; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Wang Z; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Wang H; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Cai S; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China.
  • Yang K; Shanghai Synchrotron Radiation Facilities, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
  • Jiang S; Shanghai Synchrotron Radiation Facilities, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
  • Li A; Shanghai Synchrotron Radiation Facilities, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
  • Ni N; Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095, USA.
  • Zhang G; State Key Laboratory for Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China; Collaborative Innovation Center of Quantum Matter, Beijing 100190, China. Electronic address: gmzhang@tsinghua.edu.cn.
  • Sun L; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China; Collaborative Innovation Center of Quantum Matter, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100190, China. Electronic address: llsun
  • Zhao Z; Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China; Collaborative Innovation Center of Quantum Matter, Beijing 100190, China.
Sci Bull (Beijing) ; 62(12): 857-862, 2017 Jun 30.
Article en En | MEDLINE | ID: mdl-36659320
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 2.88GPa and 26.02K 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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Bull (Beijing) Año: 2017 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Bull (Beijing) Año: 2017 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos