OBSERVATION OF THE FLUX-LINE LOCK-IN TRANSITION IN LAYERED SUPERCONDUCTORS

Citation
F. Steinmeyer et al., OBSERVATION OF THE FLUX-LINE LOCK-IN TRANSITION IN LAYERED SUPERCONDUCTORS, Europhysics letters, 25(6), 1994, pp. 459-464
Citations number
24
Categorie Soggetti
Physics
Journal title
ISSN journal
02955075
Volume
25
Issue
6
Year of publication
1994
Pages
459 - 464
Database
ISI
SICI code
0295-5075(1994)25:6<459:OOTFLT>2.0.ZU;2-T
Abstract
We have investigated the vortex structure in three different represent atives of highly anisotropic layered superconductors: T12Ba2Ca2Cu3O10, Bi2Sr2CaCu2O8 and kappa-(BEDT-TTF)2-Cu[N(CN)2]Br. Based on the equili brium part of the magnetic torque we identify the vortex lock-in trans ition, i.e. the perfect alignment of the magnetic induction parallel t o the superconducting planes. This Meissner state for pancake vortices is quantitatively confirmed by ideal screening of the perpendicular f ield component.