Numerical simulations of flux flow in stacked Josephson junctions

We numerically investigate Josephson vortex flux flow states in stacked Josephson junctions, motivated by recent experiments trying to observe the vortices in a square vortex lattice when a magnetic field is applied to layered high-T-c superconductors of the Bi2Sr2CaCu2Ox type. By extensive numerical simulations, we are able to clearly distinguish between triangular and square vortex lattices and to identify the parameters leading to an in-phase vortex configuration.