&control
    prefix='GaAs',
    pseudo_dir = '/home/fuhr/espresso/pseudo',
    outdir='./output/'
    restart_mode = 'from_scratch'
 /
 &system    
    ibrav=  2, celldm(1) = 10.62896, nat=  2, ntyp= 2,
    ecutwfc = 30.0, ecutrho = 300.0
    london=.true.
    london_rcut = 150
    london_s6 = 0.75
 /
 &electrons
 /
ATOMIC_SPECIES
 Ga  69.123    Ga.pbe-nsp-van.UPF
 As  74.92159  As.pbe-n-van.UPF
ATOMIC_POSITIONS
 Ga 0.00 0.00 0.00 
 As 0.25 0.25 0.25 
K_POINTS automatic
  16 16 16 0 0 0