Mean time of the thermal escape in a current-biased long-overlap Josephson junction

K. G. Fedorov; A. L. Pankratov

doi:10.1103/PhysRevB.76.024504

← Back to search

Mean time of the thermal escape in a current-biased long-overlap Josephson junction

K. G. Fedorov, A. L. Pankratov

DOI 10.1103/PhysRevB.76.024504 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Computer simulations of the fluctuational dynamics of a long-overlap Josephson junction in the frame of the sine-Gordon model with a white noise source have been performed. It has been demonstrated that for the case of constant critical current density the mean escape time (MET) increases with increasing junction length; and for homogeneous bias current distribution the MET tends to a constant, while for inhomogeneous current distribution the MET quickly decreases after approaching a few Josephson lengths. The mean voltage (measured in the noise-induced regime where the phase consequently jumps between neighboring potential minima) versus junction length behaves inversely in comparison with the MET.