LANGEVIN-DYNAMICS STUDY OF NUCLEAR-RELAXATION TO VORTICES IN A LAYERED SUPERCONDUCTOR

Authors
Citation
D. Reefman et Hb. Brom, LANGEVIN-DYNAMICS STUDY OF NUCLEAR-RELAXATION TO VORTICES IN A LAYERED SUPERCONDUCTOR, Physical review. B, Condensed matter, 48(5), 1993, pp. 3567-3570
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
48
Issue
5
Year of publication
1993
Pages
3567 - 3570
Database
ISI
SICI code
0163-1829(1993)48:5<3567:LSONTV>2.0.ZU;2-O
Abstract
We have investigated the possibility of nuclear relaxation due to the magnetic field fluctuations induced by thermal motion of (pancake) vor tices in a layered superconductor with a Langevin dynamics method. Onl y magnetic interactions between layers were taken into account. We fou nd that for low fields the vortex lattice (VL) is rigid and hardly aff ects the relaxation time T1. At higher vortex densities, for fields ac tually used in experimental NMR studies, effects may be visible. At th e melting temperature of the VL a peak in the relaxation rate is obser ved.