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Proceedings Paper

Phonon structure in tunneling conductance as a possible key to the mechanism of high-Tc superconductivity
Author(s): A. I. Dyachenko; Vladimir M. Svistunov
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Paper 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.

Paper Details

Date Published: 10 June 1996
PDF: 9 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241750
Show Author Affiliations
A. I. Dyachenko, A.A. Galkin Physico-Technical Institute (Ukraine)
Vladimir M. Svistunov, A.A. Galkin Physico-Technical Institute (Ukraine)

Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)

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