Thank you Dr Gavin for your reply and also for your interesting for my questions.
I have checked the 2 presentations but I didn't find what I look for . It's mentionned that in non spin-polarized calculation the spin-up density = the spin-down density . Which parameters are they monitored to make these 2 densities equal. I have read that in this case the exchange magnetic potential will be equal to zero. I want to know if it's so or not . Best regards -- Mr: A.Reggad Laboratoire de Génie Physique Université Ibn Khaldoun - Tiaret Algerie
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