[Pw_forum] Electron-Phonon couplings for insulators

[Paolo Giannozzi]

On Tue, Jun 9, 2015 at 6:05 PM, Carlo Motta <MOTTAC at tcd.ie> wrote:

>
> is it possible to compute the electron-phonon couplings for insulating
> systems?
>

it is in principle possible to compute electron-phonon matrix elements for
insulators,
but the so-called "electron-phonon coupling coefficients" lambda appearing
in the theory of
superconductivity is defined only for metals

Paolo

-- 
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy
hone +39-0432-558216, fax +39-0432-558222
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