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arXiv · 0902.2666

Josephson current in nanofabricated V/Cu/V mesoscopic junctions

C. Pascual Garcia·F. Giazotto
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Abstract

We report the successful fabrication of planar V/Cu/V mesoscopic Josephson weak-links of different size, and the analysis of their low-temperature behavior. The shorter junctions exhibit critical currents of several tens of microA at 350 mK, while Josephson coupling persists up to ~2.7 K. Good agreement is obtained by comparing the measured switching currents to a model which holds in the diffusive regime. Our results demonstrate that V is an excellent candidate for the implementation of superconducting nanodevices operating at a few kelvins.

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C. Pascual Garcia, F. Giazotto. 2009-04-06. Josephson current in nanofabricated V/Cu/V mesoscopic junctions. https://doi.org/10.1063/1.3114522

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