[Wannier] How to get real hoppings in seedname_hr.dat?

[da wang]

Dears,

I am using wannier90 to get a tight-binding model. As the user's guide,
hoppings are listed in file seedname_hr.dat. I did that, but I always
obtain hoppings with both real and imaginary part. Is there any method to
get hoppings with only real part?

Thanks.

yours,

Da Wang,
Nanjing Univ., China
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