PHONON RENORMALIZATION AND GAP ANISOTROPY

Authors
BILL A HIZHNYAKOV V SIGMUND E
Citation
A. Bill et al., PHONON RENORMALIZATION AND GAP ANISOTROPY, Physica. C, Superconductivity, 235, 1994, pp. 2137-2138
Citations number
6
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
235
Year of publication
1994
Part
3
Pages
2137 - 2138
Database
ISI
SICI code
0921-4534(1994)235:<2137:PRAGA>2.0.ZU;2-F
Abstract
We present a method for the calculation of the renormalization of the phonon energy in the superconducting state. The expression is derived in the weak coupling case and takes into account the k-dependency of t he order parameter Delta(k). For the high-T-c superconductors the infl uence of the gap anisotropy in the ab plane on the renormalization of the q --> 0 phonon energies is studied.