Dear users, I'm calculating electron-phonon coupling for a solid assembled by cluster. In order to get lambda with espresso package i have to calculate lambda(q) for a regular q-grid and then make a summation (using lambda.x).
In case of a very very flat phonon dispersion curve, do you think i can approximate lambda as a constant as a function of q, in order to get an extimate of lambda only evaluating it at Gamma point?? Thanks in advance. Massimiliano Bonomi. -- Massimiliano Bonomi Dipartimento di Fisica, Universit? degli Studi di Milano via Celoria, 16 - 20133 Milano, Italy ph. +39 02 50317 717 e-mail: massimiliano.bonomi at mi.infn.it, massimiliano.bonomi at unimi.it
