Recent content by qiub

Thanks for the reply! I also got another reply from other sources. He suggested that the way to determine which frequencies belong to the same branch, a dot product of eigenvectors from neighboring k points can be carried out, the ones with most overlap should be belong to the same branch.

Hi, I'm trying to distinguish phonon branches in the case of branch crossings in some complex phonon dispersions, like in the below example: http://cmt.dur.ac.uk/sjc/thesis/thesis/img354.gif My question is, how can I know which portions near the crossing belong to the same branch? I've...