[Pw_forum] *.fc file in PW_SCF help.

[Paolo Giannozzi]

On Aug 1, 2009, at 10:21 , xirainbow wrote:

> In "/espresso-4.0.4/examples/example06/results/alas444.fc",
> there are two atoms per unit cell: one is Al, the other is As.

ok, there are two atoms, sorry about that. So there will be
3 (polarization 1) * 3 (polarization 2) * 2 (atom 1) * 2 (atom 2)
groups of force constants, listed as a function of R.

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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