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Nonlocal Vortex Dynamics in Narrow Superconducting Channels (CROSBI ID 521502)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Helzel, Andreas ; Kokanović, Ivan ; Babić, Dinko ; Strunk, Christoph Nonlocal Vortex Dynamics in Narrow Superconducting Channels // Deutsche Phyisikalische Gesellschaft Fruehjarstagung des Arbeitskreises Festkoerperphysik, Dresden 2006. / Dr. André Wobst (ur.). Dresden: Deutsche Phyisikalische Gesellschaft Fruehjarstagung des Arbeitskreises Festkoerperphysik, 2006. str. 82-x

Podaci o odgovornosti

Helzel, Andreas ; Kokanović, Ivan ; Babić, Dinko ; Strunk, Christoph

engleski

Nonlocal Vortex Dynamics in Narrow Superconducting Channels

We investigated superconducting microstructures composed of a vertical wire crossed by two horizontal wires. In presence of an external magnetic field, a supercurrent in the upper horizontal wire drives a flow of vortices in the vertical wire. This results in a nonlocal voltage response in the lower wire [1]. We use very low pinning amorphous NbGe as superconductor, resulting in a 100 times larger nonlocal response compared to [1] and a moderate decrease when varying the channel length between 2 and 5 &micro ; m. Comparing with the local flux flow properties, we observe that the nonlocal flux flow is maximal around the irreversibility line of plain NbGe wires and extends up to Bc2. In the regime of very few vortex rows in the channel reproducible fluctuations occur in the nonlocal signal, which can be understood as jamming effects near the detector cross. [1] Grigorieva et. al., Phys. Rev. Lett. 92, 237001 (2004)

Vortex Dynamics; Superconductors; Superconducting microstructures

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Podaci o prilogu

82-x.

2006.

objavljeno

Podaci o matičnoj publikaciji

Deutsche Phyisikalische Gesellschaft Fruehjarstagung des Arbeitskreises Festkoerperphysik, Dresden 2006.

Dr. André Wobst

Dresden: Deutsche Phyisikalische Gesellschaft Fruehjarstagung des Arbeitskreises Festkoerperphysik

Podaci o skupu

Deutsche Phyisikalische Gesellschaft Fruehjarstagung des Arbeitskreises Festkoerperphysik, Dresden 2006.

predavanje

26.03.2006-31.03.2006

Dresden, Njemačka

Povezanost rada

Fizika