Current-voltage characteristics of quasi-one-dimensional superconductors: an S-shaped curve in the constant voltage regime.
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.
Vodolazov
D Y
DY
Departement Natuurkunde, Universiteit Antwerpen (UIA), B-2610 Antwerpen, Belgium.
Peeters
F M
FM
Piraux
L
L
Mátéfi-Tempfli
S
S
Michotte
S
S