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<FONT size=3>Dear all,</FONT><BR>
<FONT size=3></FONT> <BR>
<FONT size=3>I am trying to get the band structure of bilayer graphene under the effect of an external electric field. I have done the scf calculations without the inclusion of an electric field , then again did teh scf calculation with an electric field included in the z-direction (of value 0.1 Ry). However the convergence is not achieved and it stopped after 100 iterations giving the following message:</FONT><BR>
<BR>
<BR>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>total cpu time spent up to now is<SPAN style="mso-spacerun: yes"> </SPAN>83435.11 secs<BR><BR><SPAN style="mso-spacerun: yes"> </SPAN>total energy<SPAN style="mso-spacerun: yes"> </SPAN>=<SPAN style="mso-spacerun: yes"> </SPAN>-52.83248336 Ry<BR><SPAN style="mso-spacerun: yes"> </SPAN>Harris-Foulkes estimate<SPAN style="mso-spacerun: yes"> </SPAN>=<SPAN style="mso-spacerun: yes"> </SPAN>-45.80937450 Ry<BR><SPAN style="mso-spacerun: yes"> </SPAN>estimated scf accuracy<SPAN style="mso-spacerun: yes"> </SPAN>< <SPAN style="mso-spacerun: yes"> </SPAN>0.00524127 Ry<BR><BR><SPAN style="mso-spacerun: yes"> </SPAN>End of self-consistent calculation<BR><BR><SPAN style="mso-spacerun: yes"> </SPAN>convergence NOT achieved after 100 iterations: stopping</FONT><BR></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT style="FONT-SIZE: 12pt" face=Tahoma size=3>You will find below the inout file for the scf calculation when an electric field is applied:</FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT face=Tahoma size=3></FONT></SPAN> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT face=Tahoma size=3></FONT></SPAN> </P><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'">
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>&control<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>prefix='bielgraphene',<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>calculation='scf',<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>restart_mode='from_scratch',<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>lelfield = .true.,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT size=3><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN lang=PT-BR style="FONT-FAMILY: 'Courier New'; mso-ansi-language: PT-BR">nberrycyc= 1,<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=PT-BR style="FONT-FAMILY: 'Courier New'; mso-ansi-language: PT-BR"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>pseudo_dir = '/espresso-4.2/pseudo/',<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT size=3><SPAN lang=PT-BR style="FONT-FAMILY: 'Courier New'; mso-ansi-language: PT-BR"><SPAN style="mso-spacerun: yes"> </SPAN></SPAN><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'">outdir='/tmp/results_MOUJAES/'<o:p></o:p></SPAN></FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>/<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>&system<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>ibrav=<SPAN style="mso-spacerun: yes"> </SPAN>4, celldm(1) =4.608737, celldm(3)=5.330410, nat=4, ntyp= 1,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>ecutwfc = 60.D0,occupations='smearing',smearing='methfessel-paxton', degauss=0.01<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3>/<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>&electrons<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>conv_thr=1.D-5,<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>mixing_mode='local-TF'<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>mixing_beta=0.1D0<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>efield_cart(1) = 0.000,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>efield_cart(2) = 0.000,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>efield_cart(3) = 0.10,<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>/<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3>ATOMIC_SPECIES<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>C<SPAN style="mso-spacerun: yes"> </SPAN>12.0107<SPAN style="mso-spacerun: yes"> </SPAN>C.pz-rrkjus.UPF<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3>ATOMIC_POSITIONS crystal<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>C 0.000000<SPAN style="mso-spacerun: yes"> </SPAN>0.000000<SPAN style="mso-spacerun: yes"> </SPAN>0.000000<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>C 0.000000<SPAN style="mso-spacerun: yes"> </SPAN>0.000000<SPAN style="mso-spacerun: yes"> </SPAN>0.257692 <o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>C 0.333333<SPAN style="mso-spacerun: yes"> </SPAN>-0.33333<SPAN style="mso-spacerun: yes"> </SPAN>0.000000<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>C -0.333333<SPAN style="mso-spacerun: yes"> </SPAN>0.33333<SPAN style="mso-spacerun: yes"> </SPAN>0.257692<SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><o:p><FONT size=3> </FONT></o:p></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3>K_POINTS automatic<o:p></o:p></FONT></SPAN></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><SPAN lang=EN-GB style="FONT-FAMILY: 'Courier New'"><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>25 25 1<SPAN style="mso-spacerun: yes"> </SPAN>0 0 0<SPAN style="mso-spacerun: yes"> </SPAN></FONT><o:p></o:p></SPAN></P>
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<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3>Thanks</FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3></FONT> </P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3>Elie Moujaes</FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3>University of Nottingham</FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3>NG7 2RD</FONT></P>
<P class=MsoPlainText style="MARGIN: 0in 0in 0pt"><FONT face=Tahoma size=3>UK</FONT></P></SPAN> </body>
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