Thermal Activation above a Dissipation Barrier: Switching of a Small Josephson Junction
D. Vion, M. Götz, P. Joyez, D. Esteve, M. H. Devoret
DOI 10.1103/PhysRevLett.77.3435 · Physical Review Letters
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Abstract
An unshunted Josephson tunnel junction switching out of its zero-voltage state is a model system for thermal activation out of a metastable state. For small-capacitance low-critical-current junctions, this thermal activation process follows a generalized Arrhenius law involving dissipation directly in its exponent. This escape over a dissipation barrier can be computed exactly for a junction connected to a RC impedance providing large damping. The diffusion branch and the switching histograms measured for such a junction are in agreement with theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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