Effect of dissipation on thermal activation in an underdamped Josephson junction: First evidence of a transition between different damping regimes

Paolo Silvestrini; Sergio Pagano; Roberto Cristiano; O. Liengme; K. E. Gray

doi:10.1103/PhysRevLett.60.844

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Effect of dissipation on thermal activation in an underdamped Josephson junction: First evidence of a transition between different damping regimes

Paolo Silvestrini, Sergio Pagano, Roberto Cristiano, O. Liengme, K. E. Gray

DOI 10.1103/PhysRevLett.60.844 · Physical Review Letters

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Abstract

Measurements of the lifetime of the zero-voltage state in a single hysteretic Josephson junction show clear evidence of two different damping regimes. Results are obtained for a wide range of damping within the underdamped region because the damping resistance depends exponentially on inverse temperature as does the junction’s quasiparticle resistance. Thus a further insight is also given on the thorny problem of the damping resistance for the resistively shunted junction model.

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Formula	Reported Tc (K)	Pressure (GPa)	Type
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