Free Energy of Josephson Junctions

K. L. Ngai, Joel A. Appelbaum, Morrel H. Cohen, J. C. Phillips

Research output: Contribution to journalArticle

2 Scopus citations


Zawadowski has questioned the validity of the tunneling-Hamiltonian method for calculating simultaneously the amplitudes J0 and E0 of the zero-bias supercurrent and phase-coupling barrier energy. We find that Zawadowski's Green's-function method leads to results which, to lowest order in the tunneling coupling constant T, i.e., T2 agree with those previously obtained. The T2 (ln T)-1 corrections to the ratio J0E0 predicted by Zawadowski's method are found to be spurious.

Original languageEnglish (US)
Pages (from-to)352-355
Number of pages4
JournalPhysical Review
Issue number2
StatePublished - Dec 1 1967
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Ngai, K. L., Appelbaum, J. A., Cohen, M. H., & Phillips, J. C. (1967). Free Energy of Josephson Junctions. Physical Review, 163(2), 352-355.