quantum-espresso/test-suite/pw_scf/scf-mixing_beta.in

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&control
calculation = 'scf'
/
&system
ibrav=2, celldm(1) =10.20,
nat=2, ntyp=1,
ecutwfc=12.0
/
&electrons
mixing_beta=0.5
/
ATOMIC_SPECIES
Si 28.086 Si.pz-vbc.UPF
ATOMIC_POSITIONS (alat)
Si 0.00 0.00 0.00
Si 0.25 0.25 0.25
K_POINTS
2
0.250000 0.250000 0.250000 1.00
0.250000 0.250000 0.750000 3.00