<div dir="ltr">Dear Antoine,<div><br></div><div>First off, the community appreciates if you include your affiliation. </div><div><br></div><div>Concerning your question, it doesn't sound like a problem that would require vdW corrections, since the chemistry is predominantly dictated by covalent bonds. Why don't you look at similar problems studied in literature?</div><div><br></div><div>Best</div><div>Hande<br><br><div class="gmail_quote"><div dir="ltr">On Fri, Sep 7, 2018 at 8:40 AM JAY Antoine <<a href="mailto:Antoine.JAY@isae-supaero.fr">Antoine.JAY@isae-supaero.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear community,<br>Is it possible to know if I need to take Van der Waals interactions into account by only looking at the scf output done with LDA functional?<br>If no, what is the fastest way to know if I need them?<br>My system is implantation of Sb in silicon.<br><br>Thank you very much,<br><br>Regards,<br><br>Antoine Jay
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