Collapse of thermal activation in moderately damped Josephson junctions

Details Collapse of thermal activation in moderately damped Josephson junctions Collapse of thermal activation in moderately damped Josephson junctions

2005-03-03

arxiv.org/abs/cond-mat/0503067v1

Phys. Rev. Lett. 95 (2005) 157002

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.95.157002

We study switching current statistics in different moderately damped Josephson junctions: a paradoxical collapse of the thermal activation with increasing temperature is reported and explained by interplay of two conflicting consequences of thermal fluctuations, which can both assist in premature escape and help in retrapping back into the stationary state. We analyze the influence of dissipation on the thermal escape by tuning the damping parameter with a gate voltage, magnetic field, temperature and an in-situ capacitor.

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