Hello every one.<br><br>I am perplexed by change in Fermi energy with change in ecutoff, Vacuum and degauss.<br><br>I have done some calculations using a set of ecutoff, Vacuum and degauss and then repeated the same for other set of ecutoff, Vacuum and degauss.<br>
<br>I have obtained a value of -0.756 eV for Fermi energy in case where the ecutoff was 60 Ry., Vacuum was 20 A and degauss was 0.02, whereas for the second set with ecutoff of 20 Ry., Vacuum of 10 A and degauss of 0.002 the Fermi energy was 3.0097 eV.<br>
<br>Can anyone help me which value of Fermi energy is correct and why?<br><br>Please help me in understanding the what wrong am I doing?<br><br>The calculations are related to graphene with Aluminium dopant (one atom of Al and 31 carbon atoms).<br>
<br>Thanks and regards<br>Deepak Thakur<br>Research student<br>Swami Ramanand Teerth Marathwada University, Nanded.<br><br>