Material defects in hard type II superconductors pin the flux lines and thus establish the
dissipation-free current transport in the presence of a finite magnetic field. Depending on the …

We determine the current-voltage characteristic of type-II superconductors in the presence of
strong pinning centers. Focusing on a small density of defects, we derive a generic form for …

The current-carrying capacity of type-II superconductors is decisively determined by how
well material defect structures can immobilize vortex lines. In order to gain deeper insights …

We study the zero-temperature dynamic transition from the disordered flow to an ordered
flow state in driven vortices in type-II superconductors. The transition current I p is marked by …

Using a simple model of single vortex depinning, we show that the temperature dependence
of both resistivity and ac susceptibility in the superconducting state in moderate magnetic …

The dynamics of vortices in a type-II superconductor with defects is studied by solving the
time-dependent Ginzburg-Landau equations in two and three dimensions. We show that …

In superconducting films under an applied dc current, we analyze experimentally and
theoretically the influence of engineered pinning on the vortex velocity at which the flux-flow …

Type-II superconductors owe their magnetic and transport properties to vortex pinning, the
immobilization of flux quanta through material inhomogeneities or defects. Characterizing …

We consider a strong flux pinning by a network of high-j c planar defects which can result in
high macroscopic critical current densities J c in bulk superconductors. Such a pinning …

From a very simple description of vortices and pinning centers, we obtain nonlinear density
profiles of vortices in type-II dirty superconductors that result from changing an external …