[Pw_forum] electron-phonon coupling

Massimiliano Bonomi massimiliano.bonomi at mi.infn.it
Thu Sep 22 18:09:46 CEST 2005

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, Università 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

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