Cu-site doping effects, transport and magnetic properties of high-Tc oxides and their hole concentration dependence

H. Harashina; T. Nishikawa; T. Kiyokura; S. Shamoto; M. Sato; K. Kakurai

doi:10.1016/0921-4534(93)90495-C

Cu-site doping effects, transport and magnetic properties of high-T_c oxides and their hole concentration dependence

H. Harashina
, T. Nishikawa
, T. Kiyokura
, S. Shamoto
, M. Sato
, K. Kakurai

Department of Physics

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

54 Citations (Scopus)

Abstract

Doping effects have been studied by using La_2-ySr_yCu_1-χM_χO₄ (M = Zn, Ni and Mg) and YBa₂(Cu_1-χZn_χ)₃O_6+y. The rate of T_c-suppression, |dT_c/dχ|, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function χ(ω) of the magnetic excitations with temperature, studied by neutron scattering on YBa₂(Cu_0.965Zn_0.035)₃O_6.75. The peak of Hall coefficient versus T curves and the "spin gap" effect found in the T-dependence of the resistivities ρ{variant} become less significant with Zn-doping.

Original language	English
Pages (from-to)	142-150
Number of pages	9
Journal	Physica C: Superconductivity and its Applications
Volume	212
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90495-C
Publication status	Published - 1993 Jul 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(93)90495-C

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title = "Cu-site doping effects, transport and magnetic properties of high-Tc oxides and their hole concentration dependence",

abstract = "Doping effects have been studied by using La2-ySryCu1-χMχO4 (M = Zn, Ni and Mg) and YBa2(Cu1-χZnχ)3O6+y. The rate of Tc-suppression, |dTc/dχ|, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function χ(ω) of the magnetic excitations with temperature, studied by neutron scattering on YBa2(Cu0.965Zn0.035)3O6.75. The peak of Hall coefficient versus T curves and the {"}spin gap{"} effect found in the T-dependence of the resistivities ρ\{variant\} become less significant with Zn-doping.",

author = "H. Harashina and T. Nishikawa and T. Kiyokura and S. Shamoto and M. Sato and K. Kakurai",

note = "Funding Information: The authors are indebted to S. Maekawa and T. Matsuura for valuable discussions. This work is supported by a Grant-in:Aid for Scientific Research on Priority Areas of the Ministry of Education, Science and Culture.",

year = "1993",

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doi = "10.1016/0921-4534(93)90495-C",

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pages = "142--150",

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TY - JOUR

T1 - Cu-site doping effects, transport and magnetic properties of high-Tc oxides and their hole concentration dependence

AU - Harashina, H.

AU - Nishikawa, T.

AU - Kiyokura, T.

AU - Shamoto, S.

AU - Sato, M.

AU - Kakurai, K.

N1 - Funding Information: The authors are indebted to S. Maekawa and T. Matsuura for valuable discussions. This work is supported by a Grant-in:Aid for Scientific Research on Priority Areas of the Ministry of Education, Science and Culture.

PY - 1993/7/1

Y1 - 1993/7/1

N2 - Doping effects have been studied by using La2-ySryCu1-χMχO4 (M = Zn, Ni and Mg) and YBa2(Cu1-χZnχ)3O6+y. The rate of Tc-suppression, |dTc/dχ|, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function χ(ω) of the magnetic excitations with temperature, studied by neutron scattering on YBa2(Cu0.965Zn0.035)3O6.75. The peak of Hall coefficient versus T curves and the "spin gap" effect found in the T-dependence of the resistivities ρ{variant} become less significant with Zn-doping.

AB - Doping effects have been studied by using La2-ySryCu1-χMχO4 (M = Zn, Ni and Mg) and YBa2(Cu1-χZnχ)3O6+y. The rate of Tc-suppression, |dTc/dχ|, is found to be inversely proportional to the carrier concentration p. The disappearance of the superconductivity with Cu-site doping seems to be primarily due to the loss of the itinerant nature of the holes, which is supported by the variation of the spectral function χ(ω) of the magnetic excitations with temperature, studied by neutron scattering on YBa2(Cu0.965Zn0.035)3O6.75. The peak of Hall coefficient versus T curves and the "spin gap" effect found in the T-dependence of the resistivities ρ{variant} become less significant with Zn-doping.

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M3 - Article

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VL - 212

SP - 142

EP - 150

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

ER -

Cu-site doping effects, transport and magnetic properties of high-T_c oxides and their hole concentration dependence

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