Dear users, while calculating phonon frequencies at high pressure, some modes in optical branches disappear. can anybody tell me why this happen ? or is it my calculation error ?
Thanks & regards, Dr. Shyam G Khambholja, Indus University Gujarat India -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20140721/1ee87ded/attachment.html
