Free Energy of Josephson Junctions

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

Research output: Contribution to journalArticlepeer-review

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 - 1967
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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