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

doi:10.1143/JPSJ.79.023706

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

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

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

The electronic ground state in high-T_c cuprates where the superconducting state is suppressed by Ni substitution has been investigated in La_2-xSr_xCu_1-yNi_yO₄ 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 language	English
Article number	023706
Journal	journal of the physical society of japan
Volume	79
Issue number	2
DOIs	https://doi.org/10.1143/JPSJ.79.023706
Publication status	Published - 2010 Feb
Externally published	Yes

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)

Access to Document

10.1143/JPSJ.79.023706

Cite this

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

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.",

keywords = "Hole trapping, Kondo effect, LaSrCu NiO, Muon spin relaxation, Phase separation, Quantum phase transition, Specific heat",

author = "Yoichi Tanabe and Kensuke Suzuki and Tadashi Adachi and Yoji Koike and Takayuki Kawamata and Risdiana and Takao Suzuki and Isao Watanabe",

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T1 - Change of the ground state upon hole doping unveiled by Ni impurity in high-Tc cuprates

AU - Tanabe, Yoichi

AU - Suzuki, Kensuke

AU - Adachi, Tadashi

AU - Koike, Yoji

AU - Kawamata, Takayuki

AU - Risdiana,

AU - Suzuki, Takao

AU - Watanabe, Isao

PY - 2010/2

Y1 - 2010/2

N2 - 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.

AB - 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.

KW - Hole trapping

KW - Kondo effect

KW - LaSrCu NiO

KW - Muon spin relaxation

KW - Phase separation

KW - Quantum phase transition

KW - Specific heat

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