CO vibration: Difference between revisions
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*KPOINTS | *KPOINTS | ||
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*POSCAR | *POSCAR | ||
Revision as of 14:54, 23 August 2016
- INCAR
SYSTEM = CO molecule in a box ISMEAR = 0 ! Gaussian smearing IBRION = 5 ! use the conjugate gradient algorithm NFREE = 2 ! central differences POTIM = 0.02 ! 0.02 A stepwidth NSW = 1 ! ionic steps > 0
- KPOINTS
Gamma-point only 0 Monkhorst Pack 1 1 1 0 0 0
- POSCAR
CO molecule in a box 1.0 ! universal scaling parameters 8.0 0.0 0.0 ! lattice vector a(1) 0.0 8.0 0.0 ! lattice vector a(2) 0.0 0.0 8.0 ! lattice vector a(3) 1 1 ! number of atoms for each species sel ! selective degrees of freedom are changed cart ! positions in cartesian coordinates 0 0 0 F F T ! first atom 0 0 1.143 F F T ! second atom
alternatively, try to fix one of the atoms completely.
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