<div>My excuses, I added the wrong structure.xyz input file. Here is the right input file. <br /></div><br /><div class="gmail_quote"><div dir="auto" class="gmail_attr">Op dinsdag 17 oktober 2023 om 15:12:48 UTC+2 schreef Bibiana Turkcan:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div>Dear cp2k-users,</div><div><br></div><div>I am trying to run a geometry optimization on a metal surface using multiple k-points (4x4x1 Monkhorst-Pack grid) and a surface dipole correction in the direction perpendicular to the surface (using the DFT%SURFACE_DIPOLE_CORRECTION and SURF_DIP_DIR keywords). However, when doing so, the following error message appears:<br></div><div><br></div><div>' Dipole correction needs more vacuum space above the surface' <br></div><div><br></div><div>Adding more vacuum (increasing from about 38 A to about 63 A), as suggested by the error message, does not solve the issue, but removing the surface dipole correction does. <br></div><div><br></div><div>I am therefore wondering if the surface dipole correction is indeed incompatible with a calculation sampling at more than the gamma-point, as DFT calculations with multiple k-points are fairly new to cp2k. Combining the surface dipole correction with only gamma-point sampling doesn't yield any problems. Is there a workaround for this problem?</div><div><br></div><div>The input files have been attached below.</div><div><br></div><div>Many thanks,</div><div><br></div><div>Bibiana Turkcan<br></div></blockquote></div>
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