Naslov
Effect of vortex-core size on the flux lattice in a mesoscopic superconducting strip

Autori
Kokanović, Ivan ; Helzel, Andreass ; Babić, Dinko ; Sürgers, Christoph ; Strunk, Christoph

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 77 (2008), 17; 172504-1

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 present an experimental study of the vortex-motion dissipation in a mesoscopic amorphous ($a$-)Nb$_{; ; ; ; 0.7}; ; ; ; $Ge$_{; ; ; ; 0.3}; ; ; ; $ strip, with emphasis on the results for 3 - 8 vortex rows parallel to the long strip axis. In the isothermal voltage vs magnetic field traces, at a constant current, we observe plateaus superimposed onto a monotonic background. The plateaus appear because finite vortex-core size influences the accommodation of the flux lattice into the strip. This conclusion is drawn from a quantitative analysis, free of adjustable parameters, of the magnetic fields that edge the plateaus.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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