Normal-state 63Cu Knight shift and hole-band modification in Y1-xPrxBa2Cu3O7

A. P. Reyes; D. E. MacLaughlin; M. Takigawa; P. C. Hammel; R. H. Heffner; J. D. Thompson; J. E. Crow; A. Kebede; T. Mihalisin; J. Schwegler

doi:10.1063/1.344714

Normal-state 63Cu Knight shift and hole-band modification in Y1-xPrxBa2Cu3O7

A. P. Reyes
, D. E. MacLaughlin
, M. Takigawa
, P. C. Hammel
, R. H. Heffner
, J. D. Thompson
, J. E. Crow
, A. Kebede
, T. Mihalisin
, J. Schwegler

Physics

Research output: Contribution to journal › Article

Abstract

The 63Cu NMR Knight shift K has been measured in oriented powder samples of normal-state Y1-xPrxBa2Cu 3O7, x=0.2 and 0.4. At plane Cu sites K is found to decrease with Pr doping, and a temperature dependence (dK/dT>0) develops. The variation of K with bulk susceptibility χ is considerably greater than can be explained using RKKY coupling between Pr spins and Cu nuclei, and the temperature variation of K resembles that of χ in high-Tc systems with reduced conduction-hole concentration. These results are consistent with the view that Pr impurities significantly modify conduction-band properties, rather than acting as a "conventional" pair-breaking mechanism.

Original language	English
Journal	Journal of Applied Physics
Volume	67
Issue number	Issue 9
DOIs	https://doi.org/10.1063/1.344714
State	Published - 1990

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@article{1b611e666023478db5ad2d52279b6bfd,

title = "Normal-state 63Cu Knight shift and hole-band modification in Y1-xPrxBa2Cu3O7",

abstract = "The 63Cu NMR Knight shift K has been measured in oriented powder samples of normal-state Y1-xPrxBa2Cu 3O7, x=0.2 and 0.4. At plane Cu sites K is found to decrease with Pr doping, and a temperature dependence (dK/dT>0) develops. The variation of K with bulk susceptibility χ is considerably greater than can be explained using RKKY coupling between Pr spins and Cu nuclei, and the temperature variation of K resembles that of χ in high-Tc systems with reduced conduction-hole concentration. These results are consistent with the view that Pr impurities significantly modify conduction-band properties, rather than acting as a {"}conventional{"} pair-breaking mechanism.",

author = "Reyes, \{A. P.\} and MacLaughlin, \{D. E.\} and M. Takigawa and Hammel, \{P. C.\} and Heffner, \{R. H.\} and Thompson, \{J. D.\} and Crow, \{J. E.\} and A. Kebede and T. Mihalisin and J. Schwegler",

year = "1990",

doi = "10.1063/1.344714",

language = "English",

volume = "67",

journal = "Journal of Applied Physics",

number = "Issue 9",

}

TY - JOUR

T1 - Normal-state 63Cu Knight shift and hole-band modification in Y1-xPrxBa2Cu3O7

AU - Reyes, A. P.

AU - MacLaughlin, D. E.

AU - Takigawa, M.

AU - Hammel, P. C.

AU - Heffner, R. H.

AU - Thompson, J. D.

AU - Crow, J. E.

AU - Kebede, A.

AU - Mihalisin, T.

AU - Schwegler, J.

PY - 1990

Y1 - 1990

N2 - The 63Cu NMR Knight shift K has been measured in oriented powder samples of normal-state Y1-xPrxBa2Cu 3O7, x=0.2 and 0.4. At plane Cu sites K is found to decrease with Pr doping, and a temperature dependence (dK/dT>0) develops. The variation of K with bulk susceptibility χ is considerably greater than can be explained using RKKY coupling between Pr spins and Cu nuclei, and the temperature variation of K resembles that of χ in high-Tc systems with reduced conduction-hole concentration. These results are consistent with the view that Pr impurities significantly modify conduction-band properties, rather than acting as a "conventional" pair-breaking mechanism.

AB - The 63Cu NMR Knight shift K has been measured in oriented powder samples of normal-state Y1-xPrxBa2Cu 3O7, x=0.2 and 0.4. At plane Cu sites K is found to decrease with Pr doping, and a temperature dependence (dK/dT>0) develops. The variation of K with bulk susceptibility χ is considerably greater than can be explained using RKKY coupling between Pr spins and Cu nuclei, and the temperature variation of K resembles that of χ in high-Tc systems with reduced conduction-hole concentration. These results are consistent with the view that Pr impurities significantly modify conduction-band properties, rather than acting as a "conventional" pair-breaking mechanism.

UR - https://dx.doi.org/10.1063/1.344714

U2 - 10.1063/1.344714

DO - 10.1063/1.344714

M3 - Article

VL - 67

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - Issue 9

ER -

Normal-state 63Cu Knight shift and hole-band modification in Y1-xPrxBa2Cu3O7

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