Vertex-corrected tunneling inversion in electron-phonon mediated superconductors: Pb
J. K. Freericks, E. J. Nicol, A. Y. Liu, A. A. Quong
DOI 10.1103/PhysRevB.55.11651 · 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 McMillan-Rowell tunneling inversion program, which extracts the electron-phonon spectral function α2F(Ω) and the Coulomb pseudopotential μ* from experimental tunneling data, is generalized to include the lowest-order vertex correction. We neglect the momentum dependence of the electron-phonon matrix elements, which is formally equivalent to using a local approximation. The perturbation theory is performed on the imaginary axis and then an exact analytic continuation is employed to produce the tunneling density of states on the real axis. Comparison is made with the experimental data for Pb. We find λ is increased by approximately 1% due to the vertex corrections.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.19 | Pressure unresolved | unknown |
| Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.19 | Pressure unresolved | unknown |
Similar papers
Ultrathin Films of Superconducting Metals as a Platform for Topological Superconductivity
similarity 0.95Chao Lei et al.
Source status unknown — claims are unverified
Conductance regimes in superconducting junctions of atomic size
similarity 0.95J. G. Rodrigo et al.
Source status unknown — claims are unverified
First-principles calculation of the electron-phonon coupling in ultrathin Pb superconductors: Suppression of the transition temperature by surface phonons
similarity 0.95Jesse Noffsinger & Marvin L. Cohen
Source status unknown — claims are unverified
Superconductivity
similarity 0.95J. R. Schrieffer & M. Tinkham
Source status unknown — claims are unverified
Two-band superconductivity in Pb from ab initio calculations
similarity 0.94A. Floris et al.
Source status unknown — claims are unverified
Influence of nonequilibrium quasiparticles in phonon imaging of superconductors: Consistency with BCS theory in Pb crystals
similarity 0.94T. L. Head & J. P. Wolfe
Source status unknown — claims are unverified