Hello,

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.

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…(?)

HTH,
Pascal

-
Pascal Boulet - Professor - DEPARTEMENT OF CHEMISTRY
Aix-Marseille University - ST JEROME - Avenue Escadrille Normandie Niemen - 
F-13013 Marseille - FRANCE
Tél: +33(0)4 13 55 18 10 - Fax : +33(0)4 13 55 18 50
Site : http://madirel.univ-amu.fr/pages_web_BOULET_PASCAL/infos - Email : 
[email protected]








Le 10 oct. 2017 à 03:37, Jibiao Li <[email protected]> a écrit :

> 
> Dear QE developers,
> 
> 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?
> 
> Best
> 
> Jibiao Li
> 
> Yangtze Normal Univeristy, China
> 
> CO.pw.inp
> 
>  &CONTROL
>                  calculation = 'scf' ,
>                 restart_mode = 'from_scratch' ,
>                       outdir = '/home/jibiao/Calc/CO_Fe100/T/' ,
>                   pseudo_dir = '/home/jibiao/Codes/pseudo/' ,
>                       prefix = 'CO' ,
>                      tstress = .true. ,
>                      tprnfor = .true. ,
>  /
>  &SYSTEM
>                        ibrav = 6,
>                    celldm(1) = 10.847032278,
>                    celldm(3) = 3.28,
>                          nat = 2,
>                         ntyp = 2,
>                      ecutwfc = 29 ,
>                      ecutrho = 180 ,
>                  occupations = 'smearing' ,
>                      degauss = 0.05D0 ,
>                     smearing = 'methfessel-paxton' ,
>             exxdiv_treatment = 'gygi-baldereschi' ,
>  /
>  &ELECTRONS
>                  mixing_beta = 0.2D0 ,
>              diagonalization = 'david' ,
>  /
> ATOMIC_SPECIES
>     C   12.01000  C.pbe-van_ak.UPF
>     O   15.99900  O.pbe-van_ak.UPF
> ATOMIC_POSITIONS angstrom
>     C      2.870000002    2.869999976    7.634009081   
>     O      2.870000022    2.869999989    8.812254230   
> K_POINTS automatic
>   4 4 1   0 0 0
> 
> CO.projwfc.in
> 
>  &PROJWFC
>                       prefix = 'CO' ,
>                       outdir = '/home/jibiao/Calc/CO_Fe100/T/' ,
>                       ngauss = 0 ,
>                      degauss = 0.01470 ,
>                       DeltaE = 0.02 ,
>  /
> 
> 
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