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【求助】how to calculate system energy?
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Guys, when I calculate a 2-D system energy, I just use the following options in siesta fdf file, but after running, the structure has been changed, do you know why? how can I fix it. when I set the lattice vector I make it larger in one direction(y-direction) since I want to leave some vacuum space in that direction in order to avoid the interaction. Thanks! LatticeConstant 1.0 Ang %block LatticeVectors 5.3340 0.0000 0.0000 0.0000 16.1592 0.0000 0.0000 0.0000 15.000 %endblock LatticeVectors %block kgrid_Monkhorst_Pack 10 0 0 0.0 0 10 0 0.0 0 0 1 0.0 MD.TypeOfRun CG MD.NumCGsteps 100 MaxSCFIterations 200 MeshCutoff 150 Ry ElectronicTemperature 300 K DM.NumberPulay 5 DM.MixingWeight 0.01 SolutionMethod Diagon DM.Tolerance 2.d-5 MD.MaxForceTol 0.02 eV/Ang |
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