Change of the Ground State upon Hole Doping Unveiled by Ni Impurity in High-$T_{\text{c}}$ Cuprates

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概要

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• The electronic ground state in high-$T_{\text{c}}$ cuprates where the superconducting state is suppressed by Ni substitution has been investigated in La2-xSrxCu1-yNiyO4 from the specific heat and muon spin relaxation measurements. It has been found that the ground state changes from a magnetically ordered state with the strong hole-trapping by Ni to a metallic state with the Kondo effect of Ni with increasing hole-concentration. Moreover, the analysis of the results has revealed that a phase separation into the magnetically ordered phase and the metallic phase occurs around the boundary of two phases.

• Physical Society of Japanの論文
• 2010-02-15

著者

• Koike Yoji

  Department Applied Physics Graduate School Of Engineering Tohoku University

• Tanabe Yoichi

  Department Of Applied Physics Graduate School Of Engineering Tohoku University

• Adachi Tadashi

  Department Of Applied Physics Graduate School Of Engineering Tohoku University

• Suzuki Takao

  Advanced Meson Science Laboratory Nishina Center Riken

• Watanabe Isao

  Advanced Meson Science Laboratory Nishina Center Riken

• SUZUKI Kensuke

  Department of High Energy Astrophysics, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• Kawamata Takayuki

  Advanced Meson Science Laboratory, Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

• Koike Yoji

  Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Adachi Tadashi

  Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Tanabe Yoichi

  Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Suzuki Kensuke

  Department of Applied Physics, Graduate School of Engineering, Tohoku University, 6-6-05 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan

• Watanabe Isao

  Advanced Meson Science Laboratory, Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

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