Current-voltage scaling of a Josephson-junction array at irrational frustration

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.R9655· OSTI ID:385724

Granato, E ^[1]

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1. Condensed Matter Physics Group, International Centre for Theoretical Physics, 34100 Trieste (Italy)

Numerical simulations of the current-voltage characteristics of an ordered two-dimensional Josephson-junction array at an irrational flux quantum per plaquette are presented. The results are consistent with a scaling analysis that assumes a zero-temperature vortex-glass transition. The thermal-correlation length exponent characterizing this transition is found to be significantly different from the corresponding value for vortex-glass models in disordered two-dimensional superconductors. This leads to a current scale where nonlinearities appear in the current-voltage characteristics decreasing with temperature {ital T} roughly as {ital T}{sup 2} in contrast with the {ital T}{sup 3} behavior expected for disordered models. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 385724
• Journal Information: Physical Review, B: Condensed Matter, Vol. 54, Issue 14; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
SPIN GLASS STATE
HIGH-TC SUPERCONDUCTORS
FLUX QUANTIZATION
TEMPERATURE DEPENDENCE
PHASE TRANSFORMATIONS
COMPUTERIZED SIMULATION
SCALING LAWS
IV CHARACTERISTIC