EFFECT OF SUPERCONDUCTING FLUCTUATIONS ON SPIN SUSCEPTIBILITY AND NMRRELAXATION RATE

Authors
RANDERIA M VARLAMOV AA
Citation
M. Randeria et Aa. Varlamov, EFFECT OF SUPERCONDUCTING FLUCTUATIONS ON SPIN SUSCEPTIBILITY AND NMRRELAXATION RATE, Physical review. B, Condensed matter, 50(14), 1994, pp. 10401-10404
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
14
Year of publication
1994
Pages
10401 - 10404
Database
ISI
SICI code
0163-1829(1994)50:14<10401:EOSFOS>2.0.ZU;2-V
Abstract
We study the effect of superconducting fluctuations on the spin suscep tibility chi(s) and NMR relaxation rate 1/T1 just above T(c) for arbit rary impurity concentrations. Fluctuations are found to reduce chi(s) below the Pauli susceptibility. 1/T1T is enhanced above the Korringa v alue for weak pair breaking, but suppressed when the pair breaking is large.