Quantum coherence and phase transitions in granular superconductors with dissipation. II. Effect of disorder

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Journal of Low Temperature Physics; (USA)

DOI:https://doi.org/10.1007/BF00683714· OSTI ID:7243100

Panyukov, S V; Zaikin, A D ^[1]

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1. P. N. Lebedev Physical Institute of the USSR, Moscow (USSR)

The authors study the effect of disorder on a superconducting phase transition in granular arrays with dissipation. It is shown that, for a quite weak Gaussian disorder, this effect does not lead to a qualitative change of the phase diagram. Local quantum fluctuations suppress Cooper pair tunneling for a part of Josephson junctions and thus effectively increase disorder. For strongly disordered systems, the critical resistance which corresponds to a dissipative phase transition is found to be universal for a wide range of parameters.

• OSTI ID: 7243100
• Journal Information: Journal of Low Temperature Physics; (USA), Journal Name: Journal of Low Temperature Physics; (USA) Vol. 75:5-6; ISSN 0022-2291; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COHERENCE LENGTH
COOPER PAIRS
DIAGRAMS
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY
ENERGY LOSSES
FREE ENERGY
GAUSSIAN PROCESSES
GINZBURG-LANDAU THEORY
GRANULAR MATERIALS
JOSEPHSON EFFECT
JOSEPHSON JUNCTIONS
JUNCTIONS
LATTICE PARAMETERS
LENGTH
LOSSES
MATERIALS
MATHEMATICAL MODELS
MECHANICS
ORDER PARAMETERS
ORDER-DISORDER TRANSFORMATIONS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
QUANTUM MECHANICS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TUNNEL EFFECT