<div dir="auto">Thank you Travis..I'll go with Diagonalisation then..<div dir="auto">How do I calculate the cohesive energy for bulk Ag2O ?</div><div dir="auto"><br></div><div dir="auto"><br></div><div dir="auto">Yours sincerely,</div><div dir="auto">C.Hepsibah</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 11 Dec 2019 1:22 pm, "Travis" <<a href="mailto:polla...@gmail.com">polla...@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
OT works in specific cases like liquids and insulating solids with a large gamma point. OT is not available with kpoints. It also fails for metals and other conducting/small gap materials (whether this is a property of the material or an artifact of the functional). Compile CP2K with ELPA to accelerate calculations requiring full diagonalization by a pretty generous amount.<br>
<br>
-T<br>
<br>
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