Change of the ground state upon hole doping unveiled by Ni impurity in high-Tc cuprates

Yoichi Tanabe, Kensuke Suzuki, Tadashi Adachi, Yoji Koike, Takayuki Kawamata, Risdiana, Takao Suzuki, Isao Watanabe

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The electronic ground state in high-Tc 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.

Original languageEnglish
Article number023706
JournalJournal of the Physical Society of Japan
Volume79
Issue number2
DOIs
Publication statusPublished - 2010 Feb 1
Externally publishedYes

Keywords

  • Hole trapping
  • Kondo effect
  • LaSrCu NiO
  • Muon spin relaxation
  • Phase separation
  • Quantum phase transition
  • Specific heat

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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