THE MICROWAVE SURFACE IMPEDANCE OF GRANULAR HIGH-T(C) SUPERCONDUCTORSIN DC MAGNETIC-FIELDS - ITS RELATIONSHIP TO FREQUENCY-DEPENDENCE

Authors
REMILLARD SK REEVES ME RACHFORD FJ WOLF SA
Citation
Sk. Remillard et al., THE MICROWAVE SURFACE IMPEDANCE OF GRANULAR HIGH-T(C) SUPERCONDUCTORSIN DC MAGNETIC-FIELDS - ITS RELATIONSHIP TO FREQUENCY-DEPENDENCE, Journal of applied physics, 75(8), 1994, pp. 4103-4108
Citations number
18
Categorie Soggetti
Physics, Applied
Journal title
Journal of applied physics → ACNP
ISSN journal
00218979
Volume
75
Issue
8
Year of publication
1994
Pages
4103 - 4108
Database
ISI
SICI code
0021-8979(1994)75:8<4103:TMSIOG>2.0.ZU;2-3
Abstract
The surface impedance of bulk and thick film granular high temperature superconductors has been studied. The static magnetic field, temperat ure, and frequency dependence of the surface ce have been analyzed in terms of the weakly coupled grain model. Accurate quantitative predict ions of the frequency dependence of the surface resistance are made us ing this model. The model also quantitatively accounts for the negativ e magnetic field coefficient of the effective rf penetration depth. Th e rf penetration depth is a maximum when the ratio of penetration dept h to skin depth is 0.930.