@Article{Granato:2002:ZeSuTr,
               author = "Granato, Enzo",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Laborat{\'o}rio 
                         Associado de Sensores e Materiais (INPE.LAS)",
                title = "Zero-temperature superconducting transition in frustrated 
                         Josephson-junction arrays",
              journal = "Brazilian Journal of Physics",
                 year = "2002",
               volume = "32",
               number = "3",
                pages = "699--704",
                month = "Sept.",
             keywords = "SENSORS AND MATERIALS, Zero-temperature superconducting, Josephson 
                         junction array, Monte Carlo simulation, Current-voltage 
                         characteristics, Magnetic field, Quenched disorder, Phase 
                         transitions, Wire networks, Glass models, Coherence, threshold, 
                         Behavior, State, SENSORES E MATERIAIS, Supercondu{\c{c}}{\~a}o a 
                         zero temperatura, Arranjo da jun{\c{c}}{\~a}o de Josephson, 
                         Simula{\c{c}}{\~a}o de Monte Carlo, Caracter{\'{\i}}sticas da 
                         voltagem corrente, Camps magn{\'e}ticos, Comportamento, Estado.",
             abstract = "The critical behavior of zero-temperature superconducting 
                         transitions which can occur in disordered two-dimensional 
                         Josephson-junction arrays are investigated by Monte Carlo 
                         calculation of ground-state excitation energies and dynamical 
                         simulation of the current-voltage characteristics at nonzero 
                         temperatures. Two models of arrays in an applied magnetic field 
                         are considered: random dilution of junctions and random couplings 
                         with half-flux quantum per plaquette f=1/2. Above a critical value 
                         of disorder, finite-size scaling of the excitation energies 
                         indicates a zero-temperature transition and allows an estimate of 
                         the critical disorder and the thermal correlation length exponent 
                         characterizing the transition. Current-voltage scaling is 
                         consistent with the zero-temperature transition. The linear 
                         resistance is nonzero at finite temperatures but nonlinear 
                         behavior sets in at a characteristic current density determined by 
                         the thermal critical exponent. The zero-temperature transition 
                         provides an explanation of the washing out of structure for 
                         increasing disorder at f=1/2 while it remains for f=0, observed 
                         experimentally in supercondoucting wire networks.",
           copyholder = "SID/SCD",
                 issn = "0103-9733",
             language = "en",
           targetfile = "zero temperature.pdf",
        urlaccessdate = "30 jun. 2024"
}