Calculate Chern number with an odd number occupied bands in a system

xiangru kong kongxru at
Tue Mar 7 07:09:35 CET 2017

Dear Dominik,

 Could Z2pack directly calculate the Chern number with first principle

I have considered a system with odd number occupied bands (with SOC
considered), I set the related parameters the similiar way as the Z2

surface=lambda s, t: [ s, t, 0]
> z2pack.invariant.chern(result_0)


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.


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