Absence of magnetic pair breaking in Zn-dopedYBa2Cu3O7

Autor:	Azmi Gençten, R. F. Bell, R. E. Walstedt, Joseph V. Waszczak, Lynn Schneemeyer, William W. Warren, R. Dupree
Rok vydání:	1993
Předmět:	Materials science Condensed matter physics Scattering Impurity Condensed Matter::Superconductivity Pairing Spin–lattice relaxation Spin echo Condensed Matter::Strongly Correlated Electrons Zn doped Normal state Order of magnitude
Zdroj:	Physical Review B. 48:10646-10649
ISSN:	1095-3795 0163-1829
Popis:	63 Cu(2) NMR linewidths in Zn-doped YBa 2 Cu 3 O 7 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 CuO 2 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
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7272cd7ad6e71ddd2099dbb0ef28b933 https://doi.org/10.1103/physrevb.48.10646 Zobrazit plný text záznamu