72 citations · 861 across the 58 of their papers we have counts for
10 papers · 1 filter
Current-voltage scaling of a Josephson-junction array at irrational frustration
Enzo Granato
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 r…
Critical behavior of Josephson-junction arrays at f=1/2
Enzo Granato, J. M. Kosterlitz, M. P. Nightingale
The critical behavior of frustrated Josephson-junction arrays at flux quantum per plaquette is considered. Results from Monte Carlo simulations and transfer matrix computat…
Sliding Friction in the Frenkel-Kontorova Model
E. Granato, M. R. Baldan, S. C. Ying
A two-dimensional \underline{Frenkel-Kontorova model} under a steady external force is used to study the nonlinear sliding friction between flat macroscopic surfaces with a lubrica…
Conformal Anomaly and Critical Exponents of the XY-Ising Model
M. P. Nightingale, E. Granato, J. M. Kosterlitz
We use extensive Monte Carlo transfer matrix calculations on infinite strips of widths up to 30 lattice spacing and a finite-size scaling analysis to obtain critical exponents…
Quantum critical phenomena in ladders of Josephson junctions in a magnetic field
Enzo Granato
A model of a ladder of Josephson junctions in a magnetic field is considered. The topological features of the zero-temperature phase diagram, as a function of charging energy and s…
Numerical Studies of the Two Dimensional XY Model with Symmetry Breaking Fields
T. Ala-Nissila, E. Granato, K. Kankaala +2
We present results of numerical studies of the two dimensional XY model with four and eight fold symmetry breaking fields. This model has recently been shown to describe hydrogen i…