Maybe your phonon frequency has Imaginary frequency?you need to modify it in the file of elph.
At 2013-05-25 00:45:30,"Paolo Giannozzi" <paolo.giannozzi at uniud.it> wrote: >On Fri, 2013-05-24 at 12:01 +0200, yelena wrote: > >> Now I have a dilemma, i got my results and omega_log and T_c columns >> are filled with NaN. Is that because numbers are too low or something >> like that or inputs are just wrong? > >follow the track of NaN. Where does it start? there must be an incorrect >operation somewhere: a division by zero or a square root of a negative >number. Remember that any operation with a NaN will yield a NaN as >result. > >P. >-- > Paolo Giannozzi, Dept. Chemistry&Physics&Environment, > Univ. Udine, via delle Scienze 208, 33100 Udine, Italy > Phone +39-0432-558216, fax +39-0432-558222 > >_______________________________________________ >Pw_forum mailing list >Pw_forum at pwscf.org >http://pwscf.org/mailman/listinfo/pw_forum -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20130525/51bf8390/attachment.html