[Pw_forum] a question about electron-phonon coupling

[Malgorzata Wierzbowska]

On Fri, 29 Sep 2006, Paolo Giannozzi wrote:



>
> On Sep 29, 2006, at 11:49 , Malgorzata Wierzbowska wrote:
>
>> Actually the part of elphon.f90 with the epsilon which you mentioned
>> is written by Francesco Mauri and probably he could give you a better
>> explanation of the use of 20Ry as a cutoff.
>
> 20 cm^-1, actually: electron-phonon coefficients are seto to zero
> for phonons whose frequency is smaller than 20 cm^-1
>
> Paolo
>

  Yes, sorry, 20Ry would be "above" the spectrum !!!

  Anyway after summation there is no "set" for anything.

  Gosia


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