Calculate Chern number with an odd number occupied bands in a system
xiangru kong
kongxru at gmail.com
Tue Mar 7 07:09:35 CET 2017
Dear Dominik,
Could Z2pack directly calculate the Chern number with first principle
codes?
I have considered a system with odd number occupied bands (with SOC
considered), I set the related parameters the similiar way as the Z2
calculation.
surface=lambda s, t: [ s, t, 0]
> z2pack.invariant.chern(result_0)
and
num_wann=num_bands= the number of occupied bands (odd)
The error happens in wannier90.wout
>
> Error: For spinor WF num_wann ust be even
Maybe the intrinsic physic in the Chern number I have not known.
Thanks
Xiangru
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