I realize that it is intrinsically difficult to compute the dipole in a periodic supercell. The position of slab should be appropriately chosen according to the code, and the density should not be divided into periodic images.<br>
<br>Aihua<br><br><div class="gmail_quote">On Wed, Mar 11, 2009 at 4:38 PM, Lorenzo Paulatto <span dir="ltr"><<a href="mailto:paulatto@sissa.it">paulatto@sissa.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="im">On Wed, 11 Mar 2009 05:24:38 +0100, Aihua Zhang <<a href="mailto:zah7903@gmail.com">zah7903@gmail.com</a>> wrote:<br>
> The second possible bug is in compute_dip.f90, where r and r in rho(r)<br>
> seem dismatch when calculating the electronic dipole. After matching r with<br>
> rho(r) in the code, the reasonable identical results are obtains, i.e.<br>
> the calculated dipole and total energy are independent of where the molecule<br>
> is put in the supercell.<br>
<br>
</div>Good job Aihua Zhang!<br>
Could you please provide more information on this bug, so it can be fixed mainstream?<br>
I have long suspected a bug in that part, and I know at least another person who's working on it at the moment, as far as I know with no luck.<br>
<br>
cheers<br>
<br>
--<br>
Lorenzo Paulatto<br>
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