Vortex dynamics and defects in simulated flux flow

Vortex dynamics and defects in simulated flux flow.

Relativistic Dynamics of Vortex Defects in Superfluids

Superfluid condensates are known to occur in contexts ranging from laboratory liquid helium to neutron stars, and are also likely to occur in cosmological phenomena such as axion fields. In the zero temperature limit, such condensates are describable at a mesoscopic level by irrotational configurations of simple relativistic perfect fluid models. The general mechanical properties of such models...

A pr 1 99 6 Vortex dynamics in disordered Josephson junction arrays : from plastic flow to flux flow ∗

We study the dynamics of Josephson junction arrays with posi-tional disorder and driven by an external current. We consider weak magnetic fields, corresponding to a frustration f = n + 1/25 with n integer. We find that above the critical current i c there is a plastic flow of vortices, where most of the vortices are pinned and only a few vortices flow through channels. This dynamical regime is ...

How hole defects modify vortex dynamics in ferromagnetic nanodisks

Defects introduced in ferromagnetic nanodisks may deeply affect the structure and dynamics of stable vortex-like magnetization. Here, analytical techniques are used for studying, among other dynamical aspects, how a small cylindrical cavity modify the oscillatory modes of the vortex. For instance, we have realized that if the vortex is nucleated out from the hole its gyrotropic frequencies are ...

Giant suppression of flux-flow resistivity in heavy-ion irradiated Tl2Ba2Ca2Cu3O10 films: Influence of linear defects on vortex transport.