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Homework Help: A question about band structure silicene

  1. Jun 28, 2015 #1
    Dear forum people
    I consider four atomic orbitals of the silicon atom: s, px , py and pz , thus Hi,j is a 4*4 matrix.
    Hi,i is the expression of the diagonal matrix and Hi,j is the expression off-diagonal matrix where the expression for Hi,i and Hi,j is attached.
    But I can not calculate the cosine of direction.
    Who can help me find the cosine of direction?

    Attached Files:

  2. jcsd
  3. Jul 3, 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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