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kongkkk

至尊木虫 (著名写手)

[求助] ABINIT计算过程中OUT文件中提示Symmetries : the unit cell is not primitive

请问各位高手用ABINIT计算过程中OUT文件中提示Symmetries : the unit cell is not primitive,这样得到的计算结果是正确的吗?我建的是晶胞
# Crystalline aluminum : optimization of the lattice parameter
# at fixed number of k points and broadening.

#Definition of occupation numbers
occopt 1
tsmear 0.05

#Definition of the unit cell
acell 7.24385633  7.24385633  23.7996219           # This is equivalent to   7.60 7.60 7.60
#rprim  1.0  0.0  0.0   # FCC primitive vectors (to be scaled by acell)
#      0.0  1.0  0.0
  #     0.0  0.0  1.0
angdeg  90 90 90

chkprim 0
#Optimization of the lattice parameters
optcell 2
ionmov  3
ntime  10
dilatmx 1.05
ecutsm  0.5
iscf 5
#Definition of the atom types
ntypat 3          # There is only one type of atom
znucl  8 29 57          # The keyword "znucl" refers to the atomic number of the
                  # possible type(s) of atom. The pseudopotential(s)
                  # mentioned in the "files" file must correspond
                  # to the type(s) of atom. Here, the only type is Aluminum


#Definition of the atoms
natom 14           # There is only one atom per cell
typat 1  1  2  3  1  1  3  1  1  2  3  1  1  3        # This atom is of type 1, that is, Aluminum
xred              # This keyword indicate that the location of the atoms
     5.0000000000E-01  0.0000000000E+00  0.0000000000E+00
    -6.1629758220E-33 -6.1629758220E-33  1.5781000000E-01
     0.0000000000E+00  0.0000000000E+00  0.0000000000E+00
    -2.4651903288E-32 -2.4651903288E-32  3.5514000000E-01
     0.0000000000E+00  5.0000000000E-01  0.0000000000E+00
     6.1629758220E-33  6.1629758220E-33  8.4219000000E-01
     2.4651903288E-32  2.4651903288E-32  6.4486000000E-01
     0.0000000000E+00  5.0000000000E-01  5.0000000000E-01
     5.0000000000E-01  5.0000000000E-01  6.5781000000E-01
     5.0000000000E-01  5.0000000000E-01  5.0000000000E-01
     5.0000000000E-01  5.0000000000E-01  8.5514000000E-01
     5.0000000000E-01  0.0000000000E+00  5.0000000000E-01
     5.0000000000E-01  5.0000000000E-01  3.4219000000E-01
     5.0000000000E-01  5.0000000000E-01  1.4486000000E-01
#Definition of the planewave basis set
ecut  25.0         # Maximal kinetic energy cut-off, in Hartree

#Exchange-correlation functional
ixc 11             # LDA Teter Pade parametrization

#Definition of the k-point grid
kptopt 1
ngkpt 4 4 4       # This is a 2x2x2 FCC grid, based on the primitive vectors
nshiftk 1         # of the reciprocal space. For a FCC real space lattice,
                  # like the present one, it actually corresponds to the
                  # so-called 4x4x4 Monkhorst-Pack grid, if the following shifts
                  # are used :
shiftk 0.5 0.5 0.5


#Definition of the SCF procedure
nstep 1000          # 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)
                  # This value is way too large for most realistic studies of materials
getwfk -1                                                                                                                                                         
prtden 0                                                                                                                                                           
prteig 0
非常感谢!!!
ABINIT计算过程中OUT文件中提示Symmetries : the unit cell is not primitive
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zjuer

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franch: 金币+3, 谢谢回帖交流。。。。 2016-04-19 02:34:49
没什么大问题吧,如果你本身就是想算晶胞而非原胞的话。只是由于原子数目多了,计算会费时一点,然后你如果算能带的话,高对称k点的路径要跟你用的晶胞保持一致。

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2楼2016-04-17 22:16:42
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kongkkk

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2楼: Originally posted by zjuer at 2016-04-17 22:16:42
没什么大问题吧,如果你本身就是想算晶胞而非原胞的话。只是由于原子数目多了,计算会费时一点,然后你如果算能带的话,高对称k点的路径要跟你用的晶胞保持一致。

非常感谢!
3楼2016-04-19 15:48:53
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