&control
    calculation='scf'
    tstress=.true.
 /
 &system
    ibrav=2, celldm(1) =6.73, nat=1, ntyp=1,
    ecutwfc = 25.0, ecutrho=200.0,
    occupations='smearing', smearing='marzari-vanderbilt', degauss=0.02
 /
 &electrons
    conv_thr=1.e-9
 /
ATOMIC_SPECIES
 Cu 63.55 Cu.pz-d-rrkjus.UPF
ATOMIC_POSITIONS
 Cu 0.0 0.0 0.0
K_POINTS {automatic}
 4 4 4 0 0 0