dear QE users and developers I understand from previous messages that matdyn.modes contain the modes as displacement of the atoms in the unit cell and I understand that there is a real part and imaginary part but I don't understand what is the meaning of the imaginary part of the displacement of the atoms. In addition, in hexagonal lattice, the branches in the spectrum are represents transverse and longitudinal modes, or it is mixed? Thank you very much Uri Argaman Ben-Gurion University, Beer-Sheva, Israel -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20140717/67dfbf8a/attachment.html
