[Pw_forum] How to modify the exchange and correlation potential?

[Sclauzero Gabriele]

vext.f90 ?

> Dear users,
> 
> I'm learning  to generate UPFs using ld1.x code. We knew that the exchange 
> and correlation potential can be GGA or LDA, etc.  My problem is:  how could 
> I modify the potential expression?  For example, I want to use a new potential 
> based on GGA: V_new=V_GGA+W(r), which file in the "atomic/src" dir or 
> somewhere define the potential founction?
> 
> Li Bin
> binlinux at outlook.com
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Dr. Gabriele Sclauzero
Materials Theory - ETHZ
ETH Zurich, HIT G 43.2
Wolfgang-Pauli-Str. 27
8093 Zürich, Switzerland

Phone +41 44 633 94 10
Fax +41 44 633 14 59
gabriele.sclauzero at mat.ethz.ch
www.theory.mat.ethz.ch