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Problem With solving the Eigenvalues of Tight Binding Method

  1. May 8, 2015 #1
    Dear All, this is my first post on this forum and hopefully I can get what I want. .
    I am trying to build the band structure of graphene using the tight-binding method based on slater-koster correction. I use a special code to construct both Hamiltonian and overlapping matrix. I have seen when I try to diagonalize the final matrix to find the eigenvalues, the eight eigenvalues are same even if I move from Gamma- K - M. I presume there is a reason for that I don't understand it. So please I need your help to solve my issue.
  2. jcsd
  3. May 13, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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