Tc-suppression mechanism of Pr-doping in (R, Pr)Ba2Cu3O7

K. Kodama; S. Shamoto; H. Harashina; M. Sato; M. Nishi; K. Kakurai

doi:10.1016/0921-4534(95)00739-3

T_c-suppression mechanism of Pr-doping in (R, Pr)Ba₂Cu₃O₇

K. Kodama, S. Shamoto, H. Harashina, M. Sato, M. Nishi, K. Kakurai

Department of Physics

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

5 Citations (Scopus)

Abstract

Neutron inelastic measurements on Y_0.52Pr_0.48Ba₂Cu₃O₇ have been carried out. From the magnetic excitation spectra X″(q, ω), it is found that the reduction of the hole-carrier concentration p and the randomness effects introduced by the substitution of Y with Pr suppress the superconductivity. Based on the hole-trapping model, the origin of the randomness effects can be explained. The R-ion-size dependence of the suppression rate of the superconducting transition temperature, |dT_c/d x|, can also be explained qualitatively. By measuring the Hall coefficients R_H of R_1-xPr_xBa₂Cu₃O₇ (R = Yb, Y, Gd and Sm), |d p /d x| is found to be insensitive to the species of R. For RBa₂Cu₃O₇ (without Pr atoms), p decreases with increasing R-ion-size, which presents another possible explanation of the R-ion-size dependence of |dTc/d x|.

Original language	English
Pages (from-to)	333-335
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	263
Issue number	1-4
DOIs	https://doi.org/10.1016/0921-4534(95)00739-3
Publication status	Published - 1996 May

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(95)00739-3

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title = "Tc-suppression mechanism of Pr-doping in (R, Pr)Ba2Cu3O7",

abstract = "Neutron inelastic measurements on Y0.52Pr0.48Ba2Cu3O7 have been carried out. From the magnetic excitation spectra X″(q, ω), it is found that the reduction of the hole-carrier concentration p and the randomness effects introduced by the substitution of Y with Pr suppress the superconductivity. Based on the hole-trapping model, the origin of the randomness effects can be explained. The R-ion-size dependence of the suppression rate of the superconducting transition temperature, |dTc/d x|, can also be explained qualitatively. By measuring the Hall coefficients RH of R1-xPrxBa2Cu3O7 (R = Yb, Y, Gd and Sm), |d p /d x| is found to be insensitive to the species of R. For RBa2Cu3O7 (without Pr atoms), p decreases with increasing R-ion-size, which presents another possible explanation of the R-ion-size dependence of |dTc/d x|.",

author = "K. Kodama and S. Shamoto and H. Harashina and M. Sato and M. Nishi and K. Kakurai",

note = "Funding Information: This work is supportedb y a Grant-in-Aidf or ScientificR eseacho n Priority Areas from the Ministry of EducationS, ciencea ndC ulture,Ja pan.",

year = "1996",

month = may,

doi = "10.1016/0921-4534(95)00739-3",

language = "English",

volume = "263",

pages = "333--335",

journal = "Physica C: Superconductivity and its applications",

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T1 - Tc-suppression mechanism of Pr-doping in (R, Pr)Ba2Cu3O7

AU - Kodama, K.

AU - Shamoto, S.

AU - Harashina, H.

AU - Sato, M.

AU - Nishi, M.

AU - Kakurai, K.

N1 - Funding Information: This work is supportedb y a Grant-in-Aidf or ScientificR eseacho n Priority Areas from the Ministry of EducationS, ciencea ndC ulture,Ja pan.

PY - 1996/5

Y1 - 1996/5

N2 - Neutron inelastic measurements on Y0.52Pr0.48Ba2Cu3O7 have been carried out. From the magnetic excitation spectra X″(q, ω), it is found that the reduction of the hole-carrier concentration p and the randomness effects introduced by the substitution of Y with Pr suppress the superconductivity. Based on the hole-trapping model, the origin of the randomness effects can be explained. The R-ion-size dependence of the suppression rate of the superconducting transition temperature, |dTc/d x|, can also be explained qualitatively. By measuring the Hall coefficients RH of R1-xPrxBa2Cu3O7 (R = Yb, Y, Gd and Sm), |d p /d x| is found to be insensitive to the species of R. For RBa2Cu3O7 (without Pr atoms), p decreases with increasing R-ion-size, which presents another possible explanation of the R-ion-size dependence of |dTc/d x|.

AB - Neutron inelastic measurements on Y0.52Pr0.48Ba2Cu3O7 have been carried out. From the magnetic excitation spectra X″(q, ω), it is found that the reduction of the hole-carrier concentration p and the randomness effects introduced by the substitution of Y with Pr suppress the superconductivity. Based on the hole-trapping model, the origin of the randomness effects can be explained. The R-ion-size dependence of the suppression rate of the superconducting transition temperature, |dTc/d x|, can also be explained qualitatively. By measuring the Hall coefficients RH of R1-xPrxBa2Cu3O7 (R = Yb, Y, Gd and Sm), |d p /d x| is found to be insensitive to the species of R. For RBa2Cu3O7 (without Pr atoms), p decreases with increasing R-ion-size, which presents another possible explanation of the R-ion-size dependence of |dTc/d x|.

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T_c-suppression mechanism of Pr-doping in (R, Pr)Ba₂Cu₃O₇

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