Flux-flow and fluctuations in the microwave resistivity of YBa2Cu3O7-delta

Citation
E. Silva et al., Flux-flow and fluctuations in the microwave resistivity of YBa2Cu3O7-delta, INT J MOD B, 13(9-10), 1999, pp. 1107-1110
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
ISSN journal
02179792 → ACNP
Volume
13
Issue
9-10
Year of publication
1999
Pages
1107 - 1110
Database
ISI
SICI code
0217-9792(19990420)13:9-10<1107:FAFITM>2.0.ZU;2-V
Abstract
We present measurements of the microwave resistivity at 48 GHz in YBa2Cu3O7 -delta film, as a function of the temperature and the magnetic field. The m agneto-dissipation from 60 K up to a few kelvins below T-c finds a quantita tive description in terms of free flux flow. Approaching T-c, the data are not consistent with a dissipative mechanism based solely on flux dynamic. F luxon viscosity is measured as a function of the temperature, and the in-pl ane coherence length is estimated. The analysis of the zero-field transitio n at 48 GHz in terms of anisotropic renormalized fluctuations yields identi cal estimate.