Nonadiabatic analysis of the Josephson critical current influenced by quantum phase fluctuations
Ulrich Geigenmüller, Masahito Ueda
DOI 10.1103/PhysRevB.50.9369 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The influence of the electromagnetic environment on the dc Josephson current is studied allowing for nonadiabatic motion of the phase difference across a junction. The critical current is evaluated nonperturbatively within mean-field theory, fully taking into account the nonlocal kernels in the Ambegaokar-Eckern-Schön effective action. It turns out that the adiabatic approximation, which can be justified when the superconducting energy gap exceeds the charging energy, yields qualitatively correct results even for the opposite case, although quantitative deviations from the adiabatic approximation are found to be substantial in some experimentally accessible regions.
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. | 2 | Pressure not reported | unknown |
Similar papers
Dual relaxation oscillations in a Josephson-junction array
similarity 0.95S. Mukhopadhyay et al.
Source status unknown — claims are unverified
Phase-tunable thermoelectricity in a Josephson junction
similarity 0.95G. Marchegiani et al.
Source status unknown — claims are unverified
Theory of the Photonic Joule Effect in Superconducting Circuits
similarity 0.94Samuel Cailleaux et al.
Source status unknown — claims are unverified
From nonreciprocal to charge-4e supercurrent in Ge-based Josephson devices with tunable harmonic content
similarity 0.94Axel Leblanc et al.
Source status unknown — claims are unverified
Energy distribution controlled ballistic Josephson junction
similarity 0.94P. Pandey et al.
Source status unknown — claims are unverified
Charge solitons and quantum fluctuations in two-dimensional arrays of small Josephson junctions
similarity 0.93P. Delsing et al.
Source status unknown — claims are unverified