Dear all
I want to calculate phonon frequency. I did a relax for my system(carbon nanotube) and saw that? the stress (Kbar) for this system is around (-40Kbar). How can i decrease the stress on my system, and for an acceptable magnitude of ferquencey,? how much be the stress on system.? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pwscf.org/pipermail/pw_forum/attachments/20130601/3c9edc1e/attachment.html
