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Dear Dominik,
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<div class="">If spinors=true in the .win file, then a “spinor_projections" block is written to the nnkp file; otherwise it’s a “projections” block. In both cases, the projections are defined in the .win file within the “projections” block (see Ch 3 of user
guide). This was done to preserve backward compatability when spinor projections were added.</div>
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<div class="">Hope that helps!</div>
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<div class="">Arash</div>
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— <br class="">
Arash Mostofi — <a href="http://www.mostofigroup.org" class="">www.mostofigroup.org</a><br class="">
Director, Thomas Young Centre @Imperial<br class="">
Imperial College London</div>
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<div class="">On 23 Jul 2017, at 21:59, Dominik Gresch <<a href="mailto:greschd@phys.ethz.ch" class="">greschd@phys.ethz.ch</a>> wrote:</div>
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<div class="">Dear Wannier90 community,<br class="">
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I have a question regarding the use of the "projections" and "spinor_projections" blocks:<br class="">
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In chapter 3.2 of the user guide, the "projections" block is used to define spinor projections. However, in 5.1.6, the same input is described as the "spinor_projections" block.<br class="">
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A quick search in the code revealed that in parameters.F90, only "projections" is used, but not "spinor_projections". On the other hand, kmesh.F90 writes the "spinor_projections" block, and the it seems that pw2wannier90 reads it.<br class="">
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So my question is this: What is the exact difference in using "spinor_projections" or "projections"? Can they be used interchangeably, or should it always be "spinor_projections" when the spin part is set? If the two are equivalent, what is the preferred method?<br class="">
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Best regards,<br class="">
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Dominik Gresch<br class="">
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