Vortex lattice in presence of a tunable periodic pinning potential
arXiv:cond-mat/0208161 · doi:10.1103/PhysRevB.67.014532
Abstract
The vortex patterns stabilized by the square array of artificial pinning sites with a tunable pinning strength are studied by using a phenomenological approach in the London limit. The transitions between pinned and deformed triangular lattices are analyzed as a function of the amplitude of the vortex-pinning site interaction and the characteristic length-scale of this interaction. The critical current and different phases of vortex lattice are studied in presence of external transport current.
13 pages, 14 figures, submitted to Phys. Rev. B