[Wien] hybrids + vdW

[Fabiana Da Pieve]

Dear Wien2k developers

I have some simple questions before I start some new calculations:

- is it possible to relax a structure with YS-PBE0 or HSE06, adding also
simultaneously van der Waals corrections via the Grimme D3 method ?

- if I understand well, one CANNOT relax a structure when considering mBJ.
This sounds reasonable as I expect that forces and stresses are not
calculated when considering the potential mBJ. Please correct me if I am
wrong. I got a bit confused by a post this morning.

- I guess it is anyway possible to run an SCF mBJ calculation (adding
simultaneously the vdW via the D3 method) to further extract the band
structure , on a structure that has been indeed PREVIOUSLY relaxed via
combining YS-PBE0 (or HSE06) +D3. I guess the answer is yes, **please
correct me in case I am wrong**.
I have anyway some doubt about the adding of the D3 corrections. I am not
really sure all this would make a sense, from the point of view of
correctly considering vdW corrections in a consistent way.
Is there a comment you might want to add ?

Thank you very much in advance for your attention
F.
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