<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif">I Have a simple question about relaxation. I'm working with a supercell of 216 atoms, an amorphous (carbon + hydrogen) material. The obtained results for energy were as follows: <br clear="all"></div><div class="gmail_default" style="font-family:verdana,sans-serif"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif">Ecut(Ry) Total Energy Total Energy/atom Total force Ry/A<br></div><div class="gmail_default" style="font-family:verdana,sans-serif"><div class="gmail_default"> 40 -2350.90316498 -10.88381094 0.087283</div><div class="gmail_default"> 60 -2353.20485284 -10.89446691 0.076404</div><div class="gmail_default"> 80 -2353.33194348 -10.89505529 0.077286</div><div class="gmail_default"> 100 -2353.41150563 -10.89542363 0.077982</div><div class="gmail_default"> 120 -2353.42860197 -10.89550278 0.078147</div><div class="gmail_default"> 140 -2353.43026886 -10.89551050 0.078132</div><div class="gmail_default"> 160 -2353.43072890 -10.89551263 0.078139</div><div class="gmail_default"> 180 -2353.43180533 -10.89551761 0.078163</div><div class="gmail_default"> 200 -2353.43250424 -10.89552085 0.078150</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div><div class="gmail_default">I'd like to perform NMR calculations using GIPAW, could someone help me, what is the best ecutwf to use (accuracy + computational time)? I'm using these pseudopotentials </div><div class="gmail_default"> C.pbe-tm-gipaw.UPF<br></div><div class="gmail_default"><div class="gmail_default"> H.pbe-tm-gipaw.UPF</div><div class="gmail_default"><br></div><div class="gmail_default">Thank very much.</div><div class="gmail_default"><br></div><div class="gmail_default"><br></div><div><br></div></div></div><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><span><font color="#888888"><div>
<div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;background-color:rgb(255,255,255)">
<span style="color:rgb(102,102,102)">Alan J. R. Ambrozio<br>Visitant PhD student <br></span></div><div style="color:rgb(80,0,80);font-family:arial,sans-serif;font-size:12.8px;background-color:rgb(255,255,255)"><span style="color:rgb(102,102,102)"></span><span><font color="#888888">Room E19-722<br>
<div>Massachusetts Institute of Technology<br>857 316-8562<br></div></font></span></div><span style="font-family:arial,sans-serif;font-size:12.8px;color:rgb(102,102,102);background-color:rgb(255,255,255)"></span></div></font></span></div></div>
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