D. Y. Vodolazov

Rearrangement of the vortex lattice due to instabilities of vortex flow

With increasing applied current we show that the moving vortex lattice changes its structure from a triangular one to a set of parallel vortex rows in a pinning free superconductor. This effect originates from the change of the shape of the vortex core due to non-equilibrium effects (similar to the mechanism of vortex motion instability in the Larkin-Ovchinnikov theory). The moving vortex creates a deficit of quasiparticles in front of its motion and an excess of quasiparticles behind the core of the moving vortex. This results in the appearance of a wake (region with suppressed order parameter) behind the vortex which attracts other vortices resulting in an effective direction-dependent interaction between vortices. When the vortex velocity

Considerable enhancement of the critical current in a superconducting film by a magnetized magnetic strip

v

Vortex-induced negative magnetoresistance and peak effect in narrow superconducting films

reaches the critical value

Saddle point states in two-dimensional superconducting films biased near the depairing current

v_c

Microscopic model for multiple flux transitions in mesoscopic superconducting loops

quasi-phase slip lines (lines with fast vortex motion) appear which may coexist with slowly moving vortices between such lines. Our results are found within the framework of the time-dependent Ginzburg-Landau equations and are strictly valid when the coherence length

Negative magnetoresistance and phase slip process in superconducting nanowires

\xi(T)

Superconducting rectifier based on the asymmetric surface barrier effect

is larger or comparable with the decay length

Tunneling spectroscopy of persistent currents in superconducting microrings

L_{in}

Symmetric and asymmetric states in a mesoscopic superconducting wire in the voltage driven regime

of the non-equilibrium quasiparticle distribution function. We qualitatively explain experiments on the instability of vortex flow at low magnetic fields when the distance between vortices

Enhancement and decrease of critical current due to suppression of superconductivity by a magnetic field

a \gg L_{in} \gg \xi (T)