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7 papers · 1 filter
Disorder-induced superconductor to insulator transition and finite phase stiffness in two-dimensional phase-glass models
Enzo Granato
We study numerically the superconductor to insulator transition in two-dimensional phase-glass (or chiral-glass) models with varying degree of disorder. These models describe the e…
Random gauge models of the superconductor-insulator transition in two-dimensional disordered superconductors
Enzo Granato
We study numerically the superconductor-insulator transition in two-dimensional inhomogeneous superconductors with gauge disorder, described by four different quantum rotor models:…
Magnetic flux disorder and superconductor-insulator transition in nanohole thin films
Enzo Granato
We study the superconductor-insulator transition in nanohole ultrathin films in a transverse magnetic field by numerical simulation of a Josephson-junction array model. Geometrical…
Resistive transition in frustrated Josephson-junction arrays on a honeycomb lattice
Enzo Granato
We use driven Monte Carlo dynamics to study the resistive behavior of superconducting Josephson junction arrays on a honeycomb lattice in a magnetic field corresponding to flux…
Spin-size disorder model for granular superconductors with charging effects
Enzo Granato, Giancarlo Jug
A quantum pseudo-spin model with random spin sizes is introduced to study the effects of charging-energy disorder on the superconducting transition in granular superconducting mate…
Phase and vortex correlations in Josephson-junction arrays at irrational frustration
Enzo Granato
Phase coherence and vortex order in a Josephson-junction array at irrational frustration are studied by extensive Monte Carlo simulations using the parallel tempering method. A sca…