<div dir="ltr">Dear all,<div><br></div><div>a happy new year!</div><div><br></div><div>I have recently played with 2-D materials (yes, graphene) and electric fields. I encountered several situations where convergence is really hard to achieve and I was wondering which of the following parameters is usually considered to be helping with convergence</div><div><br></div><div><div>&control</div><div>....</div><div> lelfield=.true.</div><div> gdir=3</div><div> nberrycyc=6</div><div> nppstr=1</div><div>/</div><div><br></div><div><div>&ELECTRONS</div><div> ....</div><div> mixing_beta=0.4</div><div> mixing_mode='TF'</div><div> efield_cart(3)=0.00275</div><div>/</div></div><div><br></div><div><br></div><div>the system is separated in z-direction by ~20A of vacuum. the cutoffs for (NC) PPs were converged in the field-free case.</div><div><br></div><div>What is a suggested "systematic" approach to get convergence in fields of this magnitude?</div><div><br></div><div>Your help is greatly appreciated!</div><div><br></div><div>With best wishes for the new year,</div><div><br></div><div>Chris </div>-- <br><div class="gmail_signature"><div dir="ltr">Postdoctoral Researcher<br>Center for Quantum Nanoscience, Institute for Basic Science<br>Ewha Womans University, Seoul, South Korea<blockquote type="cite" style="font-size:12.8px"><div dir="ltr"><div><div dir="ltr"></div></div></div></blockquote></div></div>
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