Low-field diamagnetic response of granular superconductors at finite temperatures
Journal Article
·
· Physical Review, B: Condensed Matter; (United States)
- Dipartimento di Informatica, Universita degli Studi di Salerno, 84081 Baronissi (Saudi Arabia) (Italy)
- Dipartimento di Fisica, Universita degli Studi di Salerno, 84081 Baronissi (Saudi Arabia) (Italy)
We study the low-field diamagnetic response of granular superconductors at finite temperatures by means of a simple two-dimensional Josephson-junction array. The temperature effects are taken into account by inserting white-noise current sources in parallel to the resistively shunted junction circuit models of the Josephson junctions of the network. By this analysis we argue that a simplified one-dimensional description of the equivalent circuit, proposed by the authors for cylindrical granular superconductors, is still valid even in the presence of thermally activated flux jumps. A flux-creep picture for intergranular flux motion follows.
- OSTI ID:
- 5007531
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 49:17; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTORS
DIAMAGNETISM
EQUIVALENT CIRCUITS
GRANULAR MATERIALS
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
TEMPERATURE DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS
ELECTRONIC CIRCUITS
JUNCTIONS
MAGNETISM
MATERIALS
SUPERCONDUCTING JUNCTIONS
665411* - Basic Superconductivity Studies- (1992-)
SUPERCONDUCTIVITY AND SUPERFLUIDITY
SUPERCONDUCTORS
DIAMAGNETISM
EQUIVALENT CIRCUITS
GRANULAR MATERIALS
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
TEMPERATURE DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS
ELECTRONIC CIRCUITS
JUNCTIONS
MAGNETISM
MATERIALS
SUPERCONDUCTING JUNCTIONS
665411* - Basic Superconductivity Studies- (1992-)