Naslov
Static and time-resolved vortex dynamics in a- Nb0.7Ge0.3

Autori
Otto, Florian ; Frisch, Martin ; Bilusic, Ante ; Babic, Dinko ; Suergers, Christoph ; Strunk, Christoph

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
72. Jahrestagung der DPG und DPG Frühjahrstagung des Arbeitskreises Festkörperphysik, Berlin, SR Njemačka, 25.-29.02.2008. / - , 2008

Skup
72. Jahrestagung der DPG und DPG Frühjahrstagung des Arbeitskreises Festkörperphysik

Mjesto i datum
Berlin, Njemačka, 25.02.2008. - 29.02.2008

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
superconductivity; vortices; pinning

Sažetak
We investigate the motion of vortices in amorphous Nb0.7Ge0.3. Because of the very low pinning in this high-kappa type-II superconductor, we are able to measure local and non-local transport in the flux-flow regime over large parts of the B-T-phase diagram [1]. Interestingly, there is a finite non-local response close to Tc, even when the applied magnetic field is zero. This points towards the presence of spontaneously formed vortex- antivortex pairs above the Berezinskii- Kosterlitz-Thouless transition. In addition, we report first non-local transport measurements in the time domain, using a boxcar averaging technique. [1] A.Helzel et al., Phys. Rev. B 74, 220510 (R) (2006)

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA