[交流] 【求助】算SrTiO3能带结构得到结果有误！

&CONTROL
  calculation = "bands",
  pseudo_dir  = "../pseudo",
  outdir      = "../tmp",
  restart_mode='from_scratch',
  prefix='SrTiO3'
/
&SYSTEM
   ibrav = 0,
   nat= 5,
   ntyp= 3,
   ecutwfc = 25.0,
   nbnd = 30
/
&electrons
    diagonalization='david'
/
CELL_PARAMETERS cubic
7.6793805 0.0000000 0.0000000
0.0000000 7.6793805 0.0000000
0.0000000 0.0000000 7.6793805
ATOMIC_SPECIES
O  15.9994 O.pbe-van_ak.UPF
Ti 47.867  Ti.pbe-sp-van_ak.UPF
Sr 87.62   Sr.pbe-nsp-van.UPF
ATOMIC_POSITIONS (crystal)
O       0.000000   0.500000   0.500000
O       0.500000   0.000000   0.500000
O       0.500000   0.500000   0.000000
Ti      0.500000   0.500000   0.500000
Sr      0.000000   0.000000   0.000000
K_POINTS
28
   0.0 0.0 0.0 1.0
   0.0 0.0 0.1 1.0
   0.0 0.0 0.2 1.0
   0.0 0.0 0.3 1.0
   0.0 0.0 0.4 1.0
   0.0 0.0 0.5 1.0
   0.0 0.0 0.6 1.0
   0.0 0.0 0.7 1.0
   0.0 0.0 0.8 1.0
   0.0 0.0 0.9 1.0
   0.0 0.0 1.0 1.0
   0.0 0.0 0.0 1.0
   0.0 0.1 0.1 1.0
   0.0 0.2 0.2 1.0
   0.0 0.3 0.3 1.0
   0.0 0.4 0.4 1.0
   0.0 0.5 0.5 1.0
   0.0 0.6 0.6 1.0
   0.0 0.7 0.7 1.0
   0.0 0.8 0.8 1.0
   0.0 0.9 0.9 1.0
   0.0 1.0 1.0 1.0
   0.0 0.0 0.0 1.0
   0.1 0.1 0.1 1.0
   0.2 0.2 0.2 1.0
   0.3 0.3 0.3 1.0
   0.4 0.4 0.4 1.0
   0.5 0.5 0.5 1.0