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

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

doi:10.1103/PhysRevB.77.172504

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

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

DOI 10.1103/PhysRevB.77.172504 · Physical Review B

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Abstract

We present an experimental study of the vortex-motion dissipation in a mesoscopic amorphous (a−)Nb0.7Ge0.3 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb0.7Ge0.3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.1	Pressure not reported	unknown