10 June 1996 Phonon structure in tunneling conductance as a possible key to the mechanism of high-Tc superconductivity
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Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996); doi: 10.1117/12.241750
Event: Photonics West '96, 1996, San Jose, CA, United States
Abstract
An influence of anisotropy on phonon structure in d2I/dV2(V) curve was examined by direct solving of the Eliashberg equations. The studies include the s- and d-types of pairing symmetry as well as scattering on impurities. As is revealed the phonon structure in the second derivative remains isotropic and should be found at eV equals $HBAR(omega) plus <(Delta) > where (omega) is the phonon frequency and the effective gap <(Delta) > is close to the maximum value of (Delta) (k) in the case of strong anisotropy of energy gap (Delta) (k). The smearing of phonon structure could be taken into account by using a complex gap function (Delta) ((omega) +i(Gamma) ) in the Dynes' formula. The influence of the localized states on the phonon structure in d2I/dV2 is discussed.
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A. I. Dyachenko, Vladimir M. Svistunov, "Phonon structure in tunneling conductance as a possible key to the mechanism of high-Tc superconductivity", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241750; https://doi.org/10.1117/12.241750
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KEYWORDS
Phonons

Superconductors

Anisotropy

Superconductivity

Metals

Bosons

Scattering

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