Kinematic vortex-antivortex lines in strongly driven superconducting
stripes
PHYSICAL REVIEW B, (2009)DOI: 10.1103/PhysRevB.79.184506
Abstract
In the framework of the time-dependent Ginzburg-Landau formalism, we
study the ``resistive'' state of a submicron superconducting stripe in
the presence of a longitudinal current. Sufficiently strong current
leads to phase slippage between the leads, which is manifested as
oppositely charged kinematic vortices moving in opposite directions
perpendicular to applied drive. Depending on the distribution of
superconducting current density the vortex-antivortex either nucleate in
the middle of the stripe and are expelled laterally or enter on opposite
sides of the sample and are driven together to annihilation. We
distinguish between the two scenarios as a function of relevant
parameters and show how the creation/annihilation point of the
vortex-antivortex and their individual velocity can be manipulated by
applied magnetic field and current.