Dear Eduardo, The frequency are the square roots of the eigenvalues of the dynamical matrix, it is not possible to compute just a few eigenvalues without having the whole matrix.
Kind regards ▼ Hide quoted text On 22 Dec 2015 6:55 pm, "Eduardo Menendez" <[email protected]> wrote: > Hi, > I have one doubt about the PHONON code. Is it possible to compute just a > few phonon frequencies using the PHONON keywords last_irr, ldiag ? For > example, using > > last_irr = 10, > ldiag=.true.,, > > may one find the frequencies of just the first irreducible representations > ? > > Thank you, > > Eduardo Menendez Proupin > Departamento de Fisica, Facultad de Ciencias, Universidad de Chile > URL: http://www.gnm.cl/emenendez > > > > _______________________________________________ > Pw_forum mailing list > [email protected] > http://pwscf.org/mailman/listinfo/pw_forum >
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