Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7

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

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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 languageEnglish
Pages (from-to)10646-10649
Number of pages4
JournalPhysical Review B
Volume48
Issue number14
DOIs
StatePublished - 1 Jan 1993

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moments
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Walstedt, R. E., Bell, R. F., Schneemeyer, L., Waszczak, J. V., Warren, W. W., Dupree, R., & Gencten, A. (1993). Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7. Physical Review B, 48(14), 10646-10649. https://doi.org/10.1103/PhysRevB.48.10646
Walstedt, R. E. ; Bell, R. F. ; Schneemeyer, Lynn ; Waszczak, J. V. ; Warren, W. W. ; Dupree, R. ; Gencten, A. / Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7. In: Physical Review B. 1993 ; Vol. 48, No. 14. pp. 10646-10649.
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Walstedt, RE, Bell, RF, Schneemeyer, L, Waszczak, JV, Warren, WW, Dupree, R & Gencten, A 1993, 'Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7', Physical Review B, vol. 48, no. 14, pp. 10646-10649. https://doi.org/10.1103/PhysRevB.48.10646

Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7. / Walstedt, R. E.; Bell, R. F.; Schneemeyer, Lynn; Waszczak, J. V.; Warren, W. W.; Dupree, R.; Gencten, A.

In: Physical Review B, Vol. 48, No. 14, 01.01.1993, p. 10646-10649.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Walstedt, R. E.

AU - Bell, R. F.

AU - Schneemeyer, Lynn

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AU - Warren, W. W.

AU - Dupree, R.

AU - Gencten, A.

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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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Walstedt RE, Bell RF, Schneemeyer L, Waszczak JV, Warren WW, Dupree R et al. Absence of magnetic pair breaking in Zn-doped YBa2Cu3O7. Physical Review B. 1993 Jan 1;48(14):10646-10649. https://doi.org/10.1103/PhysRevB.48.10646