[Pw_forum] Computing Second order response

[Paolo Giannozzi]

On May 31, 2010, at 18:10 , loc duong ding wrote:

> The problem is when the code calcualtion second order response,
> it is not convergence.

try to reduce "alpha_mix" to a smaller value, 0.3 or 0.1 or whatever
is appropriate (default is 0.7)

P.
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Paolo Giannozzi, Dept of Physics, University of Udine
via delle Scienze 208, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222