Band structure interpolation

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bob
Posts: 42
Joined: Wed Aug 04, 2010 8:39 am
Location: Eindhoven, The Netherlands
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Band structure interpolation

Post by bob » Thu Dec 15, 2016 4:37 pm

Hi guys,

I seem to be doing something wrong with band structure interpolation in ypp even without QP corrections. Let me tell you what I did:
  • DFT nscf calculation with pw.x for Silicon
  • p2y, followed by yambo initialization
  • used ypp -n to remove time reversal symmetry
  • yambo init in FixSymm folder
  • ypp -s b to interpolate band structure between Gamma and X using 10 points along the line
Looking at the result (see also attached), the output at Gamma is already strange:

Code: Select all

#   |k|        b1         b2         b3         b4         b5         b6         b7         b8         kx         ky         kz
#
     0.00000  -12.28288   -0.49402   -0.21131   -0.31651    2.43757    2.38482    1.93734    3.23343    0.00000    0.00000    0.00000
I am at a loss at what it is that I have done wrong. Any suggestions?

Cheers,
Bjoern
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Dr. Bjoern Baumeier
Eindhoven University of Technology
Eindhoven, The Netherlands

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