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[en] The influence of the gap anisotropy on the superconductivity induced renormalization of q = 0 phonons is studied. An analytical expression for the shift and the broadening of the phonon lines is derived in second order of the electron-lattice coupling. The full k-dependency of the gap function is taken into account. The renormalization is calculated numerically for different anisotropies of the gap (s-wave, d-wave...) And compared to Raman experiments. The value of the hole-lattice coupling in the high-Tc materials can be estimated
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Mihailovic, D.; Ruani, G.; Kaldis, E.; Mueller, K.A. (eds.); 296 p; ISBN 981-02-2180-0; 
; 1995; p. 261-266; International Workshop on: Anharmonic Properties of High - Tc Cuprates; Bled (Slovenia); 1-6 Sep 1994; 14 ref., 1 figs.
; 1995; p. 261-266; International Workshop on: Anharmonic Properties of High - Tc Cuprates; Bled (Slovenia); 1-6 Sep 1994; 14 ref., 1 figs.