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ABSENCE OF MAGNETIC PAIR-BREAKING IN ZN-DOPED YBA2CU3O7

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UNSPECIFIED (1993) ABSENCE OF MAGNETIC PAIR-BREAKING IN ZN-DOPED YBA2CU3O7. PHYSICAL REVIEW B, 48 (14). pp. 10646-10649.

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Abstract

Cu-63(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, J(eff) = 20 meV, is more than an order of magnitude too small to account for the suppression of T(c) 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.

Item Type: Journal Item
Subjects: Q Science > QC Physics
Journal or Publication Title: PHYSICAL REVIEW B
Publisher: AMERICAN PHYSICAL SOC
ISSN: 0163-1829
Official Date: 1 October 1993
Dates:
DateEvent
1 October 1993UNSPECIFIED
Volume: 48
Number: 14
Number of Pages: 4
Page Range: pp. 10646-10649
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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