Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7

R. E. Walstedt; R. F. Bell; L. F. Schneemeyer; J. V. Waszczak; W. W. Warren; R. Dupree; A. Gencten

doi:10.1103/PhysRevB.48.10646

Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7

R. E. Walstedt, R. F. Bell, L. F. Schneemeyer, J. V. Waszczak, W. W. Warren, R. Dupree, A. Gencten

Chemistry and Biochemistry

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Abstract

Cu63(2) NMR linewidths in Zn-doped YBa2Cu3O7 exhibit a predominant component proportional to T-1 in the normal state. We attribute this result to spin-exchange scattering of carriers from localized moments associated with Zn impurities in the CuO2 planes. The estimated moment-carrier exchange, Jeff=20 meV, is more than an order of magnitude too small to account for the suppression of Tc in this system via Abrikosov-Gorkov pair breaking. A suggested alternative explanation is pair breaking by strong potential scattering from the Zn impurity sites which requires d-wave pairing.

Original language	English
Pages (from-to)	10646-10649
Number of pages	4
Journal	Physical Review B
Volume	48
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.48.10646
State	Published - 1993

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abstract = "Cu63(2) NMR linewidths in Zn-doped YBa2Cu3O7 exhibit a predominant component proportional to T-1 in the normal state. We attribute this result to spin-exchange scattering of carriers from localized moments associated with Zn impurities in the CuO2 planes. The estimated moment-carrier exchange, Jeff=20 meV, is more than an order of magnitude too small to account for the suppression of Tc in this system via Abrikosov-Gorkov pair breaking. A suggested alternative explanation is pair breaking by strong potential scattering from the Zn impurity sites which requires d-wave pairing.",

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T1 - Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7

AU - Walstedt, R. E.

AU - Bell, R. F.

AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

AU - Warren, W. W.

AU - Dupree, R.

AU - Gencten, A.

PY - 1993

Y1 - 1993

N2 - Cu63(2) NMR linewidths in Zn-doped YBa2Cu3O7 exhibit a predominant component proportional to T-1 in the normal state. We attribute this result to spin-exchange scattering of carriers from localized moments associated with Zn impurities in the CuO2 planes. The estimated moment-carrier exchange, Jeff=20 meV, is more than an order of magnitude too small to account for the suppression of Tc in this system via Abrikosov-Gorkov pair breaking. A suggested alternative explanation is pair breaking by strong potential scattering from the Zn impurity sites which requires d-wave pairing.

AB - Cu63(2) NMR linewidths in Zn-doped YBa2Cu3O7 exhibit a predominant component proportional to T-1 in the normal state. We attribute this result to spin-exchange scattering of carriers from localized moments associated with Zn impurities in the CuO2 planes. The estimated moment-carrier exchange, Jeff=20 meV, is more than an order of magnitude too small to account for the suppression of Tc in this system via Abrikosov-Gorkov pair breaking. A suggested alternative explanation is pair breaking by strong potential scattering from the Zn impurity sites which requires d-wave pairing.

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JO - Physical Review B

JF - Physical Review B

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Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7

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