<div dir="ltr">Dear Nam,<div><br></div><div>Yes, by default, only the gamma point is sampled and you need to converge with respect to the size of your supercell.</div><div><br></div><div>Multiple k-points are implemented, but you might encounter difficulties with certain methods or approaches that are not conmpatible with multiple k-point calculations:</div><div><a href="https://www.cp2k.org/faq:kpoints">https://www.cp2k.org/faq:kpoints</a> </div><div><br></div><div>For an example, see this tutorial:</div><div><a href="https://www.cp2k.org/exercises:2016_uzh_cmest:band_structure_calculation">https://www.cp2k.org/exercises:2016_uzh_cmest:band_structure_calculation</a> <br></div><div><br></div><div>Yours sincerely,</div><div>Patrick Gono <br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 22 Jul 2019 at 06:09, Nam Tran <<a href="mailto:trann...@gmail.com">trann...@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Dear CP2K's experts<div><br></div><div>I recently moved to CP2K from Quantum Espresso. </div><div>Most of the exercies and publication I found on the CP2K website does not use k-point sample for their calculations. </div><div>Is it correct that the BZ integration is perfromed only at Gama point only?. </div><div>So in order to increase the accuracy of small unit cell I need to MULTIPLE_UNIT_CELLS (That leeds to smaller BZ volume and higher mesh density ?)</div><div><br></div><div>Best regards</div><div>Nam</div></div>
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