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[hongki@physics.utexas.edu]

Hello everyone,

I'm trying to calculate Berry curvature and Chern number changing net 
magnetization.
In this forum, there is explanation about Berry phase approach to 
polarization 
including derivatives of wavefunctions with respect to k or other variables.

However, what I want to change is the direction of the net magnetic moment so 
that by calculating Berry curvature along the arbitary direction of the 
magnetic
moment,which in general need not be the lowest energy direction, and 
averaging it, 
I want to calculate the Chern number.

Any comment or help would be greatly appreciated.

Hongki Min