Vodolazov D Y, Peeters F M, Piraux L, Mátéfi-Tempfli S, Michotte S
Departement Natuurkunde, Universiteit Antwerpen (UIA), B-2610 Antwerpen, Belgium.
Phys Rev Lett. 2003 Oct 10;91(15):157001. doi: 10.1103/PhysRevLett.91.157001. Epub 2003 Oct 7.
Applying a constant voltage to superconducting nanowires we find that its I-V characteristic exhibits an unusual S behavior. This behavior is the direct consequence of the dynamics of the superconducting condensate and of the existence of two different critical currents: j(c2) at which the pure superconducting state becomes unstable and j(c1)<j(c2) at which the phase-slip state is realized in the system.