Ferron, Alejandro, Dominguez, Daniel
Solid state devices for quantum bit computation (qubits) are not perfect isolated two-level systems, since additional higher energy levels always exist. One example is the Josephson flux qubit, which...
Anisotropic ac dissipation at the surface of mesoscopic superconductors (2007)
Hernandez, Alexander D., Lopez, Arturo, Dominguez, Daniel
In this work we study the ac dissipation of mesoscopic superconductors at microwave frequencies using the time dependent Ginzburg-Landau equations. Our numerical simulations show that the ac...
Quantum chaos in the mesoscopic device for the Josephson flux qubit (2006)
Pozzo, Ezequiel N., Dominguez, Daniel, Sanchez, Maria Jose
We show that the three-junction SQUID device designed for the Josephson flux qubit can be used to study quantum chaos when operated at high energies. In the parameter region where the system is...
Out-of-equilibrium dynamics of the vortex glass (2006)
Bustingorry, Sebastian, Cugliandolo, Leticia, Dominguez, Daniel
We study the relaxational dynamics of flux lines in high-temperature superconductors with random pinning using Langevin dynamics. At high temperatures the dynamics is stationary and the fluctuation...
Dynamic fluctuations of elastic lines in random environments (2006)
Bustingorry, Sebastian, Iguain, Jose Luis, Chamon, Claudio, Cugliandolo, Leticia F., Dominguez, Daniel
We study the fluctuations of the two-time dependent global roughness of finite size elastic lines in a quenched random environment. We propose a scaling form for the roughness distribution function...
Bustingorry, Sebastian, Cugliandolo, Leticia F., Dominguez, Daniel
We study the relaxation dynamics of flux lines in dirty high-temperature superconductors using numerical simulations of a London-Langevin model of the interacting vortex lines. By analysing the...
Bustingorry, Sebastian, Cugliandolo, Leticia F., Dominguez, Daniel
We study the relaxation dynamics of flux lines in dirty high-temperature superconductors using numerical simulations of a London-Langevin model of the interacting vortex lines. By analysing the...
Dynamic fluctuations of elastic lines in random environments (2006)
Bustingorry, Sebastian, Iguain, Jose Luis, Chamon, Claudio, Cugliandolo, Leticia F., Dominguez, Daniel
We study the fluctuations of the two-time dependent global roughness of finite size elastic lines in a quenched random environment. We propose a scaling form for the roughness distribution function...
Fidelity and quantum chaos in the mesoscopic device for the Josephson flux qubit (2006)
Pozzo, Ezequiel N., Dominguez, Daniel
We show that the three-junction SQUID device designed for the Josephson flux qubit can be used to study the dynamics of quantum chaos when operated at high energies. We determine the parameter region...
Out-of-equilibrium dynamics of the vortex glass (2006)
Bustingorry, Sebastian, Cugliandolo, Leticia, Dominguez, Daniel
We study the relaxational dynamics of flux lines in high-temperature superconductors with random pinning using Langevin dynamics. At high temperatures the dynamics is stationary and the fluctuation...
Dynamic fluctuations of elastic lines in random environments (2006)
Bustingorry, Sebastian, Iguain, Jose Luis, Chamon, Claudio, Cugliandolo, Leticia F., Dominguez, Daniel
We study the fluctuations of the two-time dependent global roughness of finite size elastic lines in a quenched random environment. We propose a scaling form for the roughness distribution function...
Bustingorry, Sebastian, Cugliandolo, Leticia F., Dominguez, Daniel
We study the relaxation dynamics of flux lines in dirty high-temperature superconductors using numerical simulations of a London-Langevin model of the interacting vortex lines. By analysing the...
Out-of-equilibrium dynamics of the vortex glass (2006)
Bustingorry, Sebastian, Cugliandolo, Leticia, Dominguez, Daniel
We study the relaxational dynamics of flux lines in high-temperature superconductors with random pinning using Langevin dynamics. At high temperatures the dynamics is stationary and the fluctuation...
Dynamic fluctuations of elastic lines in random environments (2006)
Bustingorry, Sebastian, Iguain, Jose Luis, Chamon, Claudio, Cugliandolo, Leticia F., Dominguez, Daniel
We study the fluctuations of the two-time dependent global roughness of finite size elastic lines in a quenched random environment. We propose a scaling form for the roughness distribution function...
Bustingorry, Sebastian, Cugliandolo, Leticia F., Dominguez, Daniel
We study the relaxation dynamics of flux lines in dirty high-temperature superconductors using numerical simulations of a London-Langevin model of the interacting vortex lines. By analysing the...
Non equilibrium phase diagrams of current driven Josephson junction arrays (2005)
Marconi, Veronica I., Dominguez, Daniel
We present a review of our numerical studies on non equilibrium vortex dynamics in Josephson Junction arrays (JJA) driven by a dc current. Dynamical phase diagrams for different magnetic fields,...
Out-of-equilibrium dynamics of the vortex glass (2005)
Bustingorry, Sebastian, Cugliandolo, Leticia, Dominguez, Daniel
We study the relaxational dynamics of flux lines in high-temperature superconductors with random pinning using Langevin dynamics. At high temperatures the dynamics is stationary and the fluctuation...
Effects of thermal fluctuations on the magnetic behavior of mesoscopic superconductors (2005)
Hernandez, Alexander D., Baelus, B. J., Dominguez, Daniel, Peeters, F. M.
We study the influence of thermal fluctuations on the magnetic behavior of square mesoscopic superconductors. The strength of thermal fluctuations are parameterized using the Ginzburg number, which...
Granato, Enzo, Dominguez, Daniel
We study the scaling behavior and critical dynamics of the resistive transition in Josephson-junction arrays, at f=1/2 flux quantum per plaquette, by numerical simulation of an on-site dissipation...
Magnetic Properties of the Intermediate State in Small Type-I Superconductors (2004)
Hernandez, Alexander D., Dominguez, Daniel
We present simulations of the intermediate state of type-I superconducting films solving the time dependent Ginzburg-Landau equations, which include the demagnetizing fields via the Biot-Savart law....
Heterogeneous dynamics of the three dimensional Coulomb glass out of equilibrium (2004)
Kolton, Alejandro B., Grempel, D. R., Dominguez, Daniel
The non-equilibrium relaxational properties of a three dimensional Coulomb glass model are investigated by kinetic Monte Carlo simulations. Our results suggest a transition from stationary to...
Critical currents at the Bragg glass to vortex glass transition (2003)
Hernandez, Alexander, Dominguez, Daniel
We present simulations of the transport properties of superconductors at the transition from the Bragg glass (BG) to the vortex glass (VG) phase. We study the frustrated anisotropic 3D XY model with...
Granato, Enzo, Dominguez, Daniel
We study the resistive transition in Josephson-junction arrays at $f=1/2$ flux quantum per plaquette by dynamical simulations of the resistively-shunted-junction model. The current-voltage scaling...
Marconi, Veronica, Kolton, Alejandro, Dominguez, Daniel, Gronbech-Jensen, Niels
We study, analytically and numerically, phase locking of driven vortex lattices in fully-frustrated Josephson junction arrays at zero temperature. We consider the case when an ac current is applied...
Effective temperature in driven vortex lattices with random pinning (2002)
Kolton, Alejandro B., Exartier, Raphael, Cugliandolo, Leticia, Dominguez, Daniel, Gronbech-Jensen, Niels
We study numerically correlation and response functions in non-equilibrium driven vortex lattices with random pinning. From a generalized fluctuation-dissipation relation we calculate an effective...
Nonlinear AC resistivity in s-wave and d-wave disordered granular superconductors (2002)
Li, Mai Suan, Zung, Hoang, Dominguez, Daniel
We model s-wave and d-wave disordered granular superconductors with a three-dimensional lattice of randomly distributed Josephson junctions with finite self-inductance. The nonlinear ac resistivity...
The ac magnetic response of mesoscopic type II superconductors (2002)
Hernandez, Alexander D., Dominguez, Daniel
The response of mesoscopic superconductors to an ac magnetic field is numerically investigated on the basis of the time-dependent Ginzburg-Landau equations (TDGL). We study the dependence with...
Mode-locking in driven vortex lattices with transverse ac-drive and random pinning (2001)
Kolton, Alejandro B., Dominguez, Daniel, Gronbech-Jensen, Niels
We find mode-locking steps in simulated current-voltage characteristics of driven vortex lattices with {\it random} pinning when an applied ac-current is {\it perpendicular} to the dc-current. For...
Phase-locking of driven vortex lattices with transverse ac-force and periodic pinning (2001)
Reichhardt, Charles, Kolton, Alejandro B., Dominguez, Daniel, Gronbech-Jensen, Niels
For a vortex lattice moving in a periodic array we show analytically and numerically that a new type of phase locking occurs in the presence of a longitudinal dc driving force and a transverse ac...
The surface barrier in mesoscopic type I and type II superconductors (2001)
Hernandez, Alexander D., Dominguez, Daniel
We study the surface barrier for magnetic field penetration in mesoscopic samples of both type I and type II superconductors. Our results are obtained from numerical simulations of the time-dependent...
Non-equilibrium transitions in fully frustrated Josephson junction arrays (2001)
Marconi, Veronica I., Dominguez, Daniel
We study the effect of thermal fluctuations in a fully frustrated Josephson junction array driven by a current I larger than the apparent critical current I_c(T). We calculate numerically the...
Mode-locking in ac-driven vortex lattices with random pinning (2000)
Kolton, Alejandro B., Dominguez, Daniel, Gronbech-Jensen, Niels
We find mode-locking steps in simulated current-voltage characteristics of ac-driven vortex lattices with {\it random} pinning. For low frequencies there is mode-locking above a finite ac force...
Granato, Enzo, Dominguez, Daniel
We study numerically the interplay of phase coherence and vortex-glass state in two-dimensional Josephson-junction arrays with average rational values of flux quantum per plaquette $f$ and random...
AC resistivity of d-wave ceramic superconductors (2000)
Li, Mai Suan, Dominguez, Daniel
We model d-wave ceramic superconductors with a three-dimensional lattice of randomly distributed $\pi$ Josephson junctions with finite self-inductance. The linear and nonlinear ac resistivity of the...
Marconi, Veronica I., Dominguez, Daniel
We study the non-equilibrium dynamical regimes of a moving vortex lattice in the periodic pinning of a Josephson junction array (JJA) for {\it finite temperatures} in the case of a fractional or...
Dynamical ordering in the c-axis in 3D driven vortex lattices (2000)
Kolton, Alejandro B., Dominguez, Daniel, Gronbech-Jensen, Niels
We present molecular dynamics simulations of driven vortices in layered superconductors in the presence of an external homogeneous force and point disorder. We use a model introduced by J.R.Clem for...
Hall noise and transverse freezing in driven vortex lattices (1999)
Kolton, Alejandro B., Dominguez, Daniel, Gronbech-Jensen, Niels
We study driven vortices lattices in superconducting thin films. Above the critical force $F_c$ we find two dynamical phase transitions at $F_p$ and $F_t$, which could be observed in simultaneous...
Critical Current Enhancement due to an Electric Field in a Granular d-Wave Superconductor (1999)
Dominguez, Daniel, Wiecko, Cristina, Jose, Jorge V.
We study the effects of an electric-field in the transport properties of bulk granular superconductors with different kinds of disorder. We find that for a d-wave granular superconductor with random...
Marconi, Veronica I., Dominguez, Daniel
We study the effect of thermal fluctuations in a vortex lattice driven in the periodic pinning of a Josephson junction array. The phase diagram current ($I$) vs. temperature ($T$) is studied. Above...
We study the dynamics of vortices in strongly disordered $d=2$ Josephson junction arrays and superconducting films driven by a current. We find a dynamic phase transition in vortex flow at a current...
Granato, Enzo, Dominguez, Daniel
Dynamical simulations and scaling arguments are used to study the current-voltage (IV) characteristics of a two-dimensional model of resistively shunted Josephson-junction arrays in presence of...
First-Order Melting of a Moving Vortex Lattice: Effects of Disorder (1996)
Dominguez, Daniel, Gronbech-Jensen, Niels, Bishop, A. R.
We study the melting of a moving vortex lattice through numerical simulations with the current driven 3D XY model with disorder. We find that there is a first-order phase transition even for large...
Vortex dynamics in disordered Josephson junction arrays: from plastic flow to flux flow (1996)
We study the dynamics of Josephson junction arrays with positional disorder and driven by an external current. We consider weak magnetic fields, corresponding to a frustration $f=n+1/25$ with $n$...