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    <p>Dear Jibiao,</p>
    <p>what Pascal wrote is a first source of problems in your input -
      in fact the distance between the different CO molecules of the
      repeated unit cells is quite small with only ~5 A. Furthermore,
      please correct me someone if I'm wrong, but if you want to use
      exact exchange (you specify exxdiv_treatment) you also need to use
      it by setting "input_dft".<br>
      And I also think that pz is along the z axis and thus along the
      bond of your molecule... And have you checked convergence with
      cutoff? And other pseudos?</p>
    <p>Regards</p>
    <p>Thomas<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 10/10/17 11:20, Pascal Boulet wrote:<br>
    </div>
    <blockquote
      cite="mid:0D160EAB-6EEF-439B-8FDF-AD7B28AD8BF3@univ-amu.fr"
      type="cite">
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      Hello,
      <div><br>
      </div>
      <div>I may be wrong but your input file looks strange: you have an
        isolated molecule (CO) but you specify 6 as a Bravais lattice
        and a mesh of k-points.</div>
      <div><br>
      </div>
      <div>I would choose ibrav=0, kpoint=gamma, assume_isolated=… , and
        a big box to be sure the molecule is isolated. Perhaps you will
        get better results with these options…(?)</div>
      <div><br>
      </div>
      <div>HTH,</div>
      <div>Pascal</div>
      <div><br>
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                    <div>-<br>
                      <div style="color: rgb(0, 0, 0); letter-spacing:
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                        Tahoma, Verdana, Arial, Helvetica, sans-serif;
                        font-size: 15px; line-height: 22px;"><span
                          style="color: rgb(34, 187, 234); font-size:
                          14px; font-family: verdana; font-weight: 700;">Pascal
                          Boulet</span> <span style="color: rgb(34, 187,
                          234); font-size: 11px; font-family: verdana;"><em>-
                            Professor - DEPARTEMENT OF CHEMISTRY</em></span></div>
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                        font-size: 15px; line-height: 22px;"><span
                          style="font-size: 11px; font-family: verdana;">Aix-Marseille
                          University - </span><span style="font-size:
                          11px; font-family: verdana;">ST JEROME -
                          Avenue Escadrille Normandie Niemen - F-13013
                          Marseille - FRANCE</span></div>
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                          +33(0)4 13 55 18 10 - Fax : +33(0)4 13 55 18
                          50</span></div>
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                                href="http://madirel.univ-amu.fr/pages_web_BOULET_PASCAL/infos">http://madirel.univ-amu.fr/pages_web_BOULET_PASCAL/infos</a></span></font><span
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                          text-decoration: none;">pascal.boulet@univ-amu.fr</a></div>
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          <div>Le 10 oct. 2017 à 03:37, Jibiao Li <<a
              moz-do-not-send="true" href="mailto:jibiaoli@foxmail.com">jibiaoli@foxmail.com</a>>
            a écrit :</div>
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              <div>Dear QE developers,</div>
              <div>
                <div>
                  <div><br>
                  </div>
                  <div>Here I am reporting a big bug in Quantum
                    Espresso. QE 6.1 and 5.1 yield completely different
                    pdos for a simple CO molecule. The results from QE
                    5.1 are completely wrong, because 2px and 2py
                    associated with 1pi orbitals should not be splitted
                    into three levels. These outcomes are impossible for
                    DFT calculations. The results from QE 6.1 is also
                    unsatisfying;the 2pz states should not be populated
                    at a deep level below -28 eV? </div>
                  <div><br>
                  </div>
                  <div>Best</div>
                  <div><br>
                  </div>
                  <div>Jibiao Li</div>
                  <div><br>
                  </div>
                  <div>Yangtze Normal Univeristy, China</div>
                  <div><br>
                  </div>
                  <div>CO.pw.inp</div>
                  <div><br>
                  </div>
                  <div> &CONTROL</div>
                  <div>                 calculation = 'scf' ,</div>
                  <div>                restart_mode = 'from_scratch' ,</div>
                  <div>                      outdir =
                    '/home/jibiao/Calc/CO_Fe100/T/' ,</div>
                  <div>                  pseudo_dir =
                    '/home/jibiao/Codes/pseudo/' ,</div>
                  <div>                      prefix = 'CO' ,</div>
                  <div>                     tstress = .true. ,</div>
                  <div>                     tprnfor = .true. ,</div>
                  <div> /</div>
                  <div> &SYSTEM</div>
                  <div>                       ibrav = 6,</div>
                  <div>                   celldm(1) = 10.847032278,</div>
                  <div>                   celldm(3) = 3.28,</div>
                  <div>                         nat = 2,</div>
                  <div>                        ntyp = 2,</div>
                  <div>                     ecutwfc = 29 ,</div>
                  <div>                     ecutrho = 180 ,</div>
                  <div>                 occupations = 'smearing' ,</div>
                  <div>                     degauss = 0.05D0 ,</div>
                  <div>                    smearing =
                    'methfessel-paxton' ,</div>
                  <div>            exxdiv_treatment = 'gygi-baldereschi'
                    ,</div>
                  <div> /</div>
                  <div> &ELECTRONS</div>
                  <div>                 mixing_beta = 0.2D0 ,</div>
                  <div>             diagonalization = 'david' ,</div>
                  <div> /</div>
                  <div>ATOMIC_SPECIES</div>
                  <div>    C   12.01000  C.pbe-van_ak.UPF </div>
                  <div>    O   15.99900  O.pbe-van_ak.UPF </div>
                  <div>ATOMIC_POSITIONS angstrom </div>
                  <div>    C      2.870000002    2.869999976   
                    7.634009081    </div>
                  <div>    O      2.870000022    2.869999989   
                    8.812254230    </div>
                  <div>K_POINTS automatic </div>
                  <div>  4 4 1   0 0 0 </div>
                </div>
                <div><br>
                </div>
                <div>CO.projwfc.in</div>
                <div><br>
                </div>
                <div>
                  <div> &PROJWFC</div>
                  <div>                      prefix = 'CO' ,</div>
                  <div>                      outdir =
                    '/home/jibiao/Calc/CO_Fe100/T/' ,</div>
                  <div>                      ngauss = 0 ,</div>
                  <div>                     degauss = 0.01470 ,</div>
                  <div>                      DeltaE = 0.02 ,</div>
                  <div> /</div>
                </div>
                <div><br>
                </div>
                <div><br>
                </div>
              </div>
            </div>
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    <br>
    <pre class="moz-signature" cols="72">-- 
Dr. rer. nat. Thomas Brumme
Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry
Leipzig University
Phillipp-Rosenthal-Strasse 31
04103 Leipzig

Tel:  +49 (0)341 97 36456

email: <a class="moz-txt-link-abbreviated" href="mailto:thomas.brumme@uni-leipzig.de">thomas.brumme@uni-leipzig.de</a>
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