https://doi.org/10.1140/epjb/e2010-10106-1
Non-Gaussian noise effects in the dynamics of a short overdamped Josephson junction
Dipartimento di Fisica e Tecnologie Relative, Group of
Interdisciplinary Physics (http://gip.dft.unipa.it) , Università di Palermo and CNISM-INFM, Unità di Palermo, Viale
delle Scienze, Edificio 18, I-90128 Palermo, Italy
Corresponding author: a valentid@gip.dft.unipa.it
Received:
2
February
2010
Revised:
12
October
2010
Published online:
29
November
2010
The role of thermal and non-Gaussian noise on the dynamics of driven short overdamped Josephson junctions is studied. The mean escape time of the junction is investigated considering Gaussian, Cauchy-Lorentz and Lévy-Smirnov probability distributions of the noise signals. In these conditions we find resonant activation and the first evidence of noise enhanced stability in a metastable system in the presence of Lévy noise. For Cauchy-Lorentz noise source, trapping phenomena and power law dependence on the noise intensity are observed.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2010
