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请教一下,我测试参数的时候截断能设置了5个:100、200、300、400、500Ry,除了300Ry,其他的都算出来了。截断能为300Ry的时候每次算到第7步就停止了,出现结果: 我反复计算了三次,每次都是在这个地方停止的。请问一下大家出现过这种情况吗?是什么原因呢?
下面是我的fdf文件:
SystemName Si3N4
SystemLabel Si3N4
NumberOfAtoms 36
NumberOfSpecies 2
%block ChemicalSpeciesLabel
1 14 Si
2 7 N
%endblock ChemicalSpeciesLabel
LatticeConstant 1 Ang
%block LatticeVectors
26.354884400814100 -15.215999603271500 0.000000000000000
0.000000000000000 30.431999206543001 0.000000000000000
0.000000000000000 0.000000000000000 2.911000013351440
%endblock LatticeVectors
%block kgrid_Monkhorst_Pack
1 0 0 0
0 1 0 0
0 0 20 0
%endblock kgrid_Monkhorst_Pack
AtomicCoordinatesFormat Fractional
%block AtomicCoordinatesAndAtomicSpecies
0.33307500183582400 0.50784999970346500 0.25000000000000000 2
0.58307500183582400 0.50784999970346600 0.25000000000000000 2
0.49215000029653300 0.32522500213235600 0.25000000000000000 2
0.49215000029653300 0.57522500213235700 0.25000000000000000 2
0.42477499786764200 0.41692499816417600 0.25000000000000000 2
0.67477499786764200 0.66692499816417600 0.25000000000000000 2
0.41692499816417600 0.49215000029653300 0.74999999999999900 2
0.66692499816417600 0.49215000029653300 0.74999999999999900 2
0.50784999970346600 0.42477499786764200 0.74999999999999900 2
0.50784999970346600 0.67477499786764200 0.74999999999999900 2
0.32522500213235600 0.33307500183582400 0.74999999999999900 2
0.57522500213235600 0.58307500183582300 0.74999999999999900 2
0.33333333333333200 0.41666666666666700 0.25000000000000000 2
0.58333333333333200 0.41666666666666700 0.25000000000000000 2
0.58333333333333200 0.66666666666666600 0.25000000000000000 2
0.41666666666666700 0.33333333333333300 0.74999999999999900 2
0.41666666666666700 0.58333333333333300 0.74999999999999900 2
0.66666666666666600 0.58333333333333300 0.74999999999999900 2
0.29332499951124200 0.44235000014304800 0.25000000000000000 1
0.54332499951124100 0.44235000014304800 0.25000000000000000 1
0.54332499951124100 0.69235000014304800 0.25000000000000000 1
0.30764999985695100 0.35097499936819200 0.25000000000000000 1
0.55764999985695100 0.35097499936819100 0.25000000000000000 1
0.55764999985695100 0.60097499936819200 0.25000000000000000 1
0.39902500063180800 0.45667500048875700 0.25000000000000000 1
0.64902500063180700 0.45667500048875700 0.25000000000000000 1
0.64902500063180700 0.70667500048875700 0.25000000000000000 1
0.45667500048875700 0.30764999985695100 0.74999999999999900 1
0.45667500048875700 0.55764999985695100 0.74999999999999900 1
0.70667500048875700 0.55764999985695100 0.74999999999999900 1
0.44235000014304800 0.39902500063180800 0.74999999999999900 1
0.44235000014304800 0.64902500063180700 0.74999999999999900 1
0.69235000014304900 0.64902500063180800 0.74999999999999900 1
0.35097499936819100 0.29332499951124200 0.74999999999999900 1
0.35097499936819100 0.54332499951124100 0.74999999999999900 1
0.60097499936819100 0.54332499951124100 0.74999999999999900 1
%endblock AtomicCoordinatesAndAtomicSpecies
xc.functional GGA
xc.authors PBE
MeshCutoff 300 Ry
PAO.BasisSize SZ
DM.MixingWeight 0.01
DM.NumberPulay 10
MaxSCFIterations 200
SolutionMethod diagon
MD.TypeOfRun CG
MD.NumCGsteps 500
[ Last edited by xiongxiong5712 on 2012-6-5 at 09:15 ] |
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