Naslov
Strongly nonequilibrium flux flow in the presence of perforating submicron holes

Autori
Babić, Dinko ; Bentner, Johannes ; Surgers, Christoph ; Strunk, Christoph

Izvornik
Physica. C, Superconductivity (0921-4534) 432 (2005); 223-230

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
mixed state; flux flow; nonequilibrium; mesoscopic systems

Sažetak
We report on the effects of perforating submicron holes on the vortex dynamics of amorphous Nb0.7Ge0.3 microbridges in the strongly nonequilibrium mixed state, when vortex properties change substantially. In contrast to the weak nonequilibrium - when the presence of holes may result in either an increase (close to Tc or a decrease (well below Tc) of the dissipation, in the strong nonequilibrium an enhanced dissipation is observed irrespectively of the bath temperature. Close to Tc this enhancement is similar to that in the weak nonequilibrium, but corresponds to vortices shrunk due to the Larkin-Ovchinnikov mechanism. At low temperatures the enhancement is a consequence of a weakening of the flux pinning by the holes in a regime where electron heating dominates the superconducting properties.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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