Dear all,<br> If I have a copper/carbon nanotube system, and the nanotube is semiconducting, what value should the degauss be ?Is it still a metallic system? I used the degauss as 0,but it was wrong. I'm a little confused. <br>
thank you.<br><br>&CONTROL<br> calculation = 'scf' ,<br> restart_mode = 'from_scratch' ,<br> prefix = '22' ,<br> /<br> &SYSTEM<br> ibrav = 6,celldm(1) = 21.764541128,celldm(3)=0.<div id=":8u">
213765379<br>
nat = 10,ntyp = 2,ecutwfc = 75 ,<br> occupations='smearing', smearing='gaussian', degauss=0<br> /<br>&ELECTRONS<br> conv_thr = 1.0d-8 ,<br>
mixing_beta = 0.7 ,<br> /<br>ATOMIC_SPECIES<br> C 12.01100 C.pz-vbc.UPF <br> Cu 63.55 Cu.pz-d-rrkjus.UPF<br><br>ATOMIC_POSITIONS angstrom<br> C 1.402181 -0.000000 -1.233916<br>
C 0.682146 1.225067 -1.233916<br> C -0.000000 1.402181 -0.000000<br> C -1.225067 0.682146 -0.000000<br> C -1.402181 -0.000000 -1.233916<br> C -0.682146 -1.225067 -1.233916<br>
C -0.000000 -1.402181 -0.000000<br> C 1.225067 -0.682146 -0.000000<br> Cu 0 2.804362 0<br> Cu -1.402181 2.428648737 0 <br> <br><br>K_POINTS automatic <br> 1 1 5 0 0 0</div>