E and j directions in calculating anomalous Hall conductivity

[Takeshi Inoshita]

Dear WT development team,

First of all, let me thank you for creating such a useful program and making it available for us.

I am now trying to calculate anomalous Hall conductivity σ_xy for several different choices of x (// current) and y (// electric field) for the same system. My question is how does WT determine x and y? Are they determined from the lattice vector settings?   Is there any way I can change x,y within WT (I mean, without going back to the ab initio calculation to regenerate the Wannier hamiltonian)?  Does KCUBE_BULK affect x and y?

Thank you in advance.

Tak

[Brook]

The coordinate system is determined by the LATTICE that user provided.  Basically, you can try to rotate <vx> <vy> by your definition. KCUBE_BULK will not affect the coordinate system.

• This reply was modified 5 years, 10 months ago by Brook.

[Takeshi Inoshita]

Dear Brook,

Thank you for clarifying my confusion.   I also looked into the source code (sigma_AHC.f90) and found how to modify it to output sigma_xy for arbitrary directions of x, y.

[Author]

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