Flux flow and fluctuation resistivity at 48 GHz in high-T-c superconductors

Citation
E. Silva et al., Flux flow and fluctuation resistivity at 48 GHz in high-T-c superconductors, J L TEMP PH, 117(5-6), 1999, pp. 1501-1505
Citations number
11
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
117
Issue
5-6
Year of publication
1999
Pages
1501 - 1505
Database
ISI
SICI code
0022-2291(199912)117:5-6<1501:FFAFRA>2.0.ZU;2-4
Abstract
We present measurements of the real part of the microwave restitivity at 48 GHz in YBa2Cu3O7-delta and Bi2Sr2CaCu2O8+x films, as a function of the tem perature and of the static magnetic field. In zero field, the resistivity a bove the critical temperature is well described by the frequency-dependent fluctuational excess conductivity. In a static magnetic field and below T-c , the resistivity in YBa2Cu3O7-delta can Be fully described by a simple flu x-flow: model, while in Bi2Sr2CaCu2O8+x this model applies only partially. We discuss possible alternative models.