Phase fluctuations in Josephson junctions

B. G. Orr, J. R. Clem, H. M. Jaeger, A. M. Goldman

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Thermal excitation and zero-point motion bring about fluctuations in the gauge-invariant phase coupling across Josephson junctions. These fluctuations are studied in a simple picture incorporating both the resistively shunted junction (RSJ) model and the Ambegaokar-Baratoff theory. A diagram of the parameter space of a junction delineating a boundary between the phase-coupled and phase-decoupled regimes is obtained. Estimates of the root-mean-square voltage fluctuations justify the use of the normal-state tunneling resistance rather than the temperature-dependent quasiparticle tunneling resistance in the RSJ model at the boundary.

Original languageEnglish (US)
Pages (from-to)3491-3494
Number of pages4
JournalPhysical Review B
Volume34
Issue number5
DOIs
StatePublished - Jan 1 1986

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