Vortex dynamics in the presence of a line of submicron holes along a superconducting microbridge

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dc.creatorBentner, J.
dc.creatorBabic, D.
dc.creatorSuergers, C.
dc.creatorStrunk, C.
dc.date2004-04-13
dc.date.accessioned2026-07-07T02:57:35Z
dc.date.available2026-07-07T02:57:35Z
dc.descriptionWe measured and compared the electric field vs current density characteristics in the vortex state of two amorphous Nb0.7Ge0.3 microbridges, with and without a line of submicron holes patterned along the sample axis. The power dissipation in the perforated sample exhibits a crossover, being reduced at temperatures well below the superconducting transition temperature Tc and unexpectedly enhanced close to Tc. At low temperatures the holes are efficient artificial pinning centres and reduce the average vortex velocity. We argue that the dissipation enhancement close to Tc is a consequence of a combination of the weakened pinning by the holes and an inhomogeneous driving-current distribution in their vicinity, which results in an increased average vortex velocity as well as in a channeling of the vortex motion through the holes.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0404292
dc.identifierhttp://arxiv.org/abs/cond-mat/0404292
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23724
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleVortex dynamics in the presence of a line of submicron holes along a superconducting microbridge
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