The Projector Augmented Wave method
The Projector Augmented Wave method
The Projector Augmented Wave method
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Compensation charges (continued)<strong>The</strong> compensation charges are constructed like this:˜Z a (⃗r) = ∑ lmQ a lm˜g a lm(⃗r),where ˜g a lm (⃗r) = 0 for r > ra c :˜g a lm(⃗r) = C l r l exp(−α a r 2 )Y lm (ˆr),<strong>The</strong> Q a lm ’s are chosen such that na − ñ a + Z a − ˜Z a has no multipolemoments: ∫d⃗rr l Y lm (ˆr)(n a − ñ a + Z a − ˜Z a ) = 014