Quantum fluctuations and the onset of global superconductivity in disordered Josephson-junction arrays

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.11615· OSTI ID:6937673

Bhattacharjee, J K ^[1]; Ferrell, R A; Mirhashem, B ^[2]

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1. Center for Theoretical Physics Institute for Physical Science Technology, University of Maryland, College Park, Maryland 20742 (USA)
2. Center for Superconductivity Research Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (USA)

The measured normal-state resistance threshold for the onset of global superconductivity is calculated, in the mean-field approximation, for a Josephson-junction array in which the normal-state junction resistances and, hence, also the Josephson coupling energies, are weakly disordered. Such disorder increases the threshold by a nonuniversal factor which depends on the width of the junction conductance distribution and the lattice coordination number.

• OSTI ID: 6937673
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:16; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
FLUCTUATIONS
GRANULAR MATERIALS
HAMILTONIANS
JOSEPHSON JUNCTIONS
JUNCTIONS
MATERIALS
MATHEMATICAL OPERATORS
MEAN-FIELD THEORY
PHYSICAL PROPERTIES
QUANTUM OPERATORS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VARIATIONS