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

Abstract

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.}

Authors:
 [1]
  1. Condensed Matter Physics Group, International Centre for Theoretical Physics, 34100 Trieste (Italy)
Publication Date:
OSTI Identifier:
385724
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 54; Journal Issue: 14; Other Information: PBD: Oct 1996
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; JOSEPHSON JUNCTIONS; MAGNETIC FLUX; SPIN GLASS STATE; HIGH-TC SUPERCONDUCTORS; FLUX QUANTIZATION; TEMPERATURE DEPENDENCE; PHASE TRANSFORMATIONS; COMPUTERIZED SIMULATION; SCALING LAWS; IV CHARACTERISTIC

Citation Formats

Granato, E, and Laboratorio Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, 12225 - Sao Jose dos Campos, Sao Paulo. Current-voltage scaling of a Josephson-junction array at irrational frustration. United States: N. p., 1996. Web. doi:10.1103/PhysRevB.54.R9655.
Granato, E, & Laboratorio Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, 12225 - Sao Jose dos Campos, Sao Paulo. Current-voltage scaling of a Josephson-junction array at irrational frustration. United States. doi:10.1103/PhysRevB.54.R9655.
Granato, E, and Laboratorio Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, 12225 - Sao Jose dos Campos, Sao Paulo. Tue . "Current-voltage scaling of a Josephson-junction array at irrational frustration". United States. doi:10.1103/PhysRevB.54.R9655.
@article{osti_385724,
title = {Current-voltage scaling of a Josephson-junction array at irrational frustration},
author = {Granato, E and Laboratorio Associado de Sensores e Materiais, Instituto Nacional de Pesquisas Espaciais, 12225 - Sao Jose dos Campos, Sao Paulo},
abstractNote = {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.}},
doi = {10.1103/PhysRevB.54.R9655},
journal = {Physical Review, B: Condensed Matter},
number = 14,
volume = 54,
place = {United States},
year = {1996},
month = {10}
}