Current–voltage characteristics of Pb and Sn granular superconducting nanowires

Michotte, Sébastien; Mátéfi-Tempfli, Stefan; Piraux, Luc
June 2003
Applied Physics Letters;6/9/2003, Vol. 82 Issue 23, p4119
Academic Journal
Arrays of granular superconducting Pb and Sn nanowires (40-55 nm in diameter and 22 or 50 μm long) have been prepared by electrodeposition in nanoporous membranes. A simple technique has been developed to perform electrical transport measurement on a single nanowire. By sweeping the dc current inside the nanowire, we observed the formation of phase-slip-centers far below the critical temperature. In contrast, in voltage-driven experiments, an interesting S-shaped behavior has been observed in the nucleation region of these phase-slip-centers.


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