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[Ariesto Pamungkas <ariesto@physik.rwth-aachen.de>]

Sorry this my input file. log.file has too large 
memory.  
ixc 11
ndtset 12
 
#Definition of the unit cell
acell:  3*34
acell+ 0.5 0.5 0.5
#angdeg 90.0 90.0 90.0
       
rprim 0.0  0.5  0.5
      0.5  0.0  0.5
      0.5  0.5  0.0
#chkprim 0
#spgroup 227 
#Definition of the atom types
ntypat 3
znucl 32 51 52
                  
#Definition of the atoms
natom 14
typat 2*1 4*2 8*3
xred
-0.125 -0.125 -0.125 #Ge
0.125   0.125  0.125
0.5     0.5    0.5  #Sb
0.5     0.25   0.25
0.25    0.5    0.25
0.25    0.25   0.5
0.236  0.236   0.236 #Te
0.236  0.014   0.014
0.014  0.236   0.014
0.014  0.014   0.236
-0.236 -0.236 -0.236
-0.236 -0.014 -0.014
-0.014 -0.236 -0.014
-0.014 -0.014 -0.236
 
#Definition of the planewave basis set
ecut  20.0           # Maximal kinetic energy cut-off, in Hartree
 
#Definition of the k-point grids
kptopt 1          # Option for the automatic generation of k points, taking
                  # into account the symmetry
 
ngkpt1  6  6 6
 
 
nshiftk 1         # of the reciprocal space (that form a BCC lattice !),
                  # repeated four times, with different shifts :
shiftk 0.5 0.5 0.5
      # 0.5 0.0 0.0
      # 0.0 0.5 0.0
      # 0.0 0.0 0.5
                  # In cartesian coordinates, this grid is simple cubic, and
                  # actually corresponds to the
                  # so-called 4x4x4 Monkhorst-Pack grid
 
#Definition of the SCF procedure
nstep 70          # Maximal number of SCF cycles
toldfe 1.0d-6     # Will stop when, twice in a row, the difference
                  # between two consecutive evaluations of total energy
                  # differ by less than toldfe (in Hartree)
diemac 20.0