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

Kokanović, I.; Helzel, A.; Babić, D.; Sürgers, Christoph; Strunk, C.

Abstract: 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, which is free of adjustable parameters, of the magnetic fields that edge the plateaus.


Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2008
Sprache Englisch
Identifikator DOI: 10.1103/PhysRevB.77.172504
ISSN: 1098-0121
KITopen ID: 1000050501
Erschienen in Physical Review B - Condensed Matter and Materials Physics
Band 77
Heft 17
Seiten 172504
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