Dear PWscf,<br>
<br>
I get a problem in PBE0 convergence. Below is part of the input file,<br>
<br>
&CONTROL<br>
calculation = "scf",<br>
/<br>
&SYSTEM<br>
ibrav = 12,<br>
celldm(1) = 15.73981,<br>
celldm(2) = 0.62519,<br>
celldm(3) = 4.39673,<br>
celldm(4) = 0.62519,<br>
nat = 58,<br>
ntyp = 5,<br>
ecutwfc = 80.0,<br>
input_dft = 'pbe0',<br>
nqx1 = 2, nqx2 = 1, nqx3 = 1,<br>
exxdiv_treatment= 'gygi-baldereschi'<br>
ecutvcut = 0.7<br>
x_gamma_extrapolation= .TRUE.<br>
occupations = "smearing",<br>
smearing = "methfessel-paxton",<br>
degauss = 0.01,<br>
/<br>
&ELECTRONS<br>
conv_thr = 1.D-6,<br>
mixing_beta = 0.5D0,<br>
/<br>
ATOMIC_SPECIES<br>
C 12.0107 <br>
S 32.066 <br>
H 1.00794 <br>
O 15.9994 <br>
Zn 65.409 <br>
/<br>
K_POINTS {automatic}<br>
6 3 1 0 0 0<br>
<br>
The output 'dexx' is<br>
<br>
est. exchange err (dexx) = 0.00059720 Ry<br>
est. exchange err (dexx) = -0.02431459 Ry<br>
est. exchange err (dexx) = -0.02596414 Ry<br>
est. exchange err (dexx) = -0.02720608 Ry<br>
est. exchange err (dexx) = -0.02821286 Ry<br>
est. exchange err (dexx) = -0.02946368 Ry<br>
est. exchange err (dexx) = -0.03148666 Ry<br>
est. exchange err (dexx) = -0.03481403 Ry<br>
est. exchange err (dexx) = -0.03964928 Ry<br>
est. exchange err (dexx) = -0.04531623 Ry<br>
<br>
and Fock energy is<br>
<br>
-177.9185854736362<br>
-177.9185854736362 -177.8610717829301 -177.8047524875259<br>
-177.8047524875259 -177.8356769333793 -177.8179722072562<br>
-177.8179722072562 -177.8457748551563 -177.8216492155755<br>
-177.8216492155755 -177.8490273372818 -177.8219932983469<br>
-177.8219932983469 -177.8500300290520 -177.8216410368603<br>
-177.8216410368603 -177.8505498629616 -177.8205313239625<br>
-177.8205313239625 -177.8511288881755 -177.8187531280260<br>
-177.8187531280260 -177.8519180436694 -177.8154548907789<br>
-177.8154548907789 -177.8530355735678 -177.8113176980133<br>
-177.8113176980133 -177.8542927054368 -177.8066352532881<br>
<br>
Can you please help me in this issue.<br>
<br>
Thanks,<br>
<br>
Jie Jiang<br>
<br>
Applied Physics<br>
Yale University <br>