Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Granato, Enzo"'
We apply a set of machine-learning (ML) techniques for the global exploration of the phase diagrams of two frustrated 2D Ising models with competing interactions. Based on raw Monte Carlo spin configurations generated for random system parameters, we
Externí odkaz:
http://arxiv.org/abs/2012.11529
Autor:
Granato, Enzo
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 effects of gauge disorder in superconductors due to random negative Jos
Externí odkaz:
http://arxiv.org/abs/2010.16072
Autor:
Granato, Enzo
We study the dynamic vortex Mott transition in two-dimensional superconducting arrays in a magnetic field with $f$ flux quantum per plaquette. The transition is induced by external driving current and thermal fluctuations near rational vortex densiti
Externí odkaz:
http://arxiv.org/abs/1909.05671
Autor:
Granato, Enzo
We study the differential resistivity transition of two-dimensional superconducting arrays induced by an external driving current, in the presence of thermal fluctuations and a magnetic field corresponding to $f$ flux quantum per plaquette. Recent ex
Externí odkaz:
http://arxiv.org/abs/1809.03027
Autor:
Granato, Enzo
We study numerically the superconductor-insulator transition in two-dimensional inhomogeneous superconductors with gauge disorder, described by four different quantum rotor models: a gauge glass, a flux glass, a binary phase glass and a Gaussian phas
Externí odkaz:
http://arxiv.org/abs/1711.04669
Autor:
Granato, Enzo
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 disorder due to the random location of nanoholes in the film correspo
Externí odkaz:
http://arxiv.org/abs/1607.08651
Autor:
Granato, Enzo
We study the superconductor to insulator transition at zero temperature in a Josephson-junction array model on a honeycomb lattice with $f$ flux quantum per plaquette. The path integral representation of the model corresponds to a (2+1)-dimensional c
Externí odkaz:
http://arxiv.org/abs/1602.04509
Autor:
Trushin, Oleg, Maras, Emile, Stukowski, Alexander, Granato, Enzo, Ying, See Chen, Jonsson, Hannes, Ala-Nissila, Tapio
A possible mechanism for the formation of a 90{\deg} misfit dislocation at the Ge/Si(001) interface through homogeneous nucleation is identified from atomic scale calculations where a minimum energy path connecting the coherent epitaxial state and a
Externí odkaz:
http://arxiv.org/abs/1507.08127
Autor:
Granato, Enzo
Publikováno v:
Phys. Rev. B 87, 094517 (2013)
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 $f$ flux quantum per plaquette. While for $f=1/3$ the onset of zero resistance
Externí odkaz:
http://arxiv.org/abs/1303.6006
Autor:
Granato, Enzo
Publikováno v:
Phys. Rev. B 85, 054508 (2012)
Phase coherence and vortex order in the fully frustrated XY model on a two-dimensional honeycomb lattice are studied by extensive Monte Carlo simulations using the parallel tempering method and finite-size scaling. No evidence is found for an equilib
Externí odkaz:
http://arxiv.org/abs/1204.3291