<div dir="auto">If you use TEMPS you will include the Fermi-Dirac distribution. It is called the Mermin functional [1]. If the band gap is small enough or you have dopants the Fermi energy is correct, although the effect can be small. For numerical reasons the position of the Fermi energy can be too low for a larger gap without dopants.<div dir="auto"><br></div><div dir="auto">[1] N. D. Mermin, “Thermal properties of the inhomogenous electron gas,” Phys. Rev., 137, A: 1441 (1965). 2, 11<br><br><div data-smartmail="gmail_signature" dir="auto">--<br>Professor Laurence Marks<br>Department of Materials Science and Engineering, Northwestern University<br><a href="http://www.numis.northwestern.edu">www.numis.northwestern.edu</a><br>"Research is to see what everybody else has seen, and to think what nobody else has thought" Albert Szent-Györgyi</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Jul 4, 2022, 12:09 PM Brik Hamida <<a href="mailto:hmd.brik@gmail.com">hmd.brik@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">Dear users<div dir="auto"><br></div><div dir="auto">With Wien2k I was calculated the band structure of one material which is a semiconductor . The DFT calculations in wien2k are carried at T=0 kelvin. AS I know there is no semiconductor at 0 kelvin. So How we can explain the semiconductor nature at 0 kelvin with dft calculation ? </div><div dir="auto"><br></div><div dir="auto">Best regards</div></div>
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