Naslov
Reversal of Nonlocal Vortex Motion in the Regime of Strong Nonequilibrium

Autori
Otto, Florian ; Bilušić, Ante ; Babić, Dinko ; Vodolazov, Denis Yu ; Surgers, Christoph ; Strunk, Christoph

Izvornik
Physical Review Letters (0031-9007) 104 (2010); 027005-1

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

Ključne riječi
low-Tc films; mesoscopic and nanoscale systems; Vortex lattices; flux pinning; flux creep

Sažetak
We study nonlocal vortex transport in mesoscopic amorphous Nb0.7Ge0.3 samples. A dc current I is passed through a wire connected via a perpendicular channel, of a length L=2– 5 µ ; ; ; m, with a pair of voltage probes where a nonlocal response VnlI is measured. The maximum of Rnl=Vnl/I for a given temperature occurs at an L-independent magnetic field and is proportional to 1/L. The results are interpreted in terms of the dissipative vortex motion along the channel driven by a remote current and can be understood in terms of a simple model.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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