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<p>Dear Wannier90 users, <br>
<br>
I am facing the following issues.<br>
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1. I am trying to form a few-band model of magnetism in a system that has a few bands crossing the Fermi level. I understand that orbitals are strongly localized only in insulators. Does it make any sense to use Wannier90 in my system?<br>
<br>
2. I have the VASP generated DFT groundstate of a spin-polarized system. I want to target a band which is a up-spin band. The corresponding down-spin band is displaced by about 0.5 eV and I do not want to include that in my calculation. However, the 'spinors'
tag in Wannier90 expects to find twice as many initial projections. Is there a way to form a Wannier orbital out of an orbital with a spin index, and if there is, how do I specify the initial projection for that band, since projections do not carry a spin-index?<br>
<br>
3. Could you kindly tell me why Wannier functions should be mostly real when they are well-localized? I failed to find such a constraint in the derivation of MLWFs. <br>
<br>
My apologies if these questions have been already discussed. I did not notice them, but if that is the case, I will be thankful if you point me to the right direction. <br>
<br>
Thank you for your time.<br>
Regards,<br>
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<p>Soham.<br>
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Soham S. Ghosh
<div>Graduate Student</div>
<div>Department of Physics</div>
<div>Florida State University</div>
<div>ssg09d@my.fsu.edu</div>
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