CP2K is just like any plane-wave code for 3D periodic electrostatics - the G=0 term is ignored - meaning there is an arbitrary total energy shift that needs to be corrected in some way if you want compare systems with differing charges. You don't need to do anything.<div>See numerous papers by Zunger etc in the literature for many discussions on this (in general not cp2k specific).</div><div>Matt<br><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Wednesday, 14 September 2022 at 07:42:26 UTC+1 alh...@gmail.com wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Dear users & experts,<div><br></div><div>I have heard that CP2K can automatically add background charge to neutralise the system if the system is periodic in at least one dimension and the net charge is not zero. </div><div><br></div><div>I would like to know how this works. any reference paper recommended (e.g., CP2K development paper)?</div><div><br></div><div>Thanks!</div><div><br></div><div>Alh</div></blockquote></div>
<p></p>
-- <br />
You received this message because you are subscribed to the Google Groups "cp2k" group.<br />
To unsubscribe from this group and stop receiving emails from it, send an email to <a href="mailto:cp2k+unsubscribe@googlegroups.com">cp2k+unsubscribe@googlegroups.com</a>.<br />
To view this discussion on the web visit <a href="https://groups.google.com/d/msgid/cp2k/423d6350-c792-4d52-b317-acf733d2a513n%40googlegroups.com?utm_medium=email&utm_source=footer">https://groups.google.com/d/msgid/cp2k/423d6350-c792-4d52-b317-acf733d2a513n%40googlegroups.com</a>.<br />