IDIPOL: Difference between revisions
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{{TAGDEF|IDIPOL|1 {{!}} 2 {{!}} 3 {{!}} 4}} | {{TAGDEF|IDIPOL|1 {{!}} 2 {{!}} 3 {{!}} 4}} | ||
Description: {{TAG|IDIPOL}} switches on monopole/dipole and quadrupole corrections to the total energy | Description: {{TAG|IDIPOL}} switches on monopole/dipole and quadrupole corrections to the total energy in a specific direction (1-3) or all directions (4) | ||
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== IDIPOL = 1-3 == | |||
The dipole moment will be calculated only parallel to the direction of the first, second or third lattice vector, respectively. The corrections for the total energy are calculated as the energy difference between a monopole/dipole and quadrupole in the current supercell and the same dipole placed in a super cell with the corresponding lattice vector approaching infinity. | |||
For {{TAG|IDIPOL}}=4 the full dipole moment in all directions will be calculated, and the corrections to the total energy are calculated as the energy difference between a monopole/dipole/quadrupole in the current supercell and the same monopole/dipole/quadrupole placed in a vacuum | {{NB| tip| This flag should be used for slab calculations, with the surface normal being the direction in which the {{TAG|IDIPOL}} is set}} | ||
== IDIPOL = 4 == | |||
For {{TAG|IDIPOL}}=4 the full dipole moment in all directions will be calculated, and the corrections to the total energy are calculated as the energy difference between a monopole/dipole/quadrupole in the current supercell and the same monopole/dipole/quadrupole placed in a vacuum. | |||
{{NB | tip| Use this flag for calculations for isolated molecules.}} | |||
'''Note''': strictly speaking quadrupole corrections is not the proper wording. The relevant quantity is | '''Note''': strictly speaking quadrupole corrections is not the proper wording. The relevant quantity is | ||
:<math> \int d^3{\mathbf r} \rho(\mathbf r) \Vert \mathbf r\Vert^2.</math> | :<math> \int d^3{\mathbf r} \rho(\mathbf r) \Vert \mathbf r\Vert^2.</math> | ||
== Related | == Related tags and articles == | ||
{{TAG|Monopole Dipole and Quadrupole corrections}}, | {{TAG|Monopole Dipole and Quadrupole corrections}}, | ||
{{TAG|NELECT}}, | {{TAG|NELECT}}, | ||
| Line 19: | Line 22: | ||
{{TAG|EFIELD}} | {{TAG|EFIELD}} | ||
{{sc|IDIPOL|Examples|Examples that use this tag}} | |||
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[[Category:INCAR]] | [[Category:INCAR tag]][[Category:Molecules]][[Category:Electrostatics]][[Category:Electronic ground-state properties]] | ||
Latest revision as of 09:03, 12 June 2024
IDIPOL = 1 | 2 | 3 | 4
Description: IDIPOL switches on monopole/dipole and quadrupole corrections to the total energy in a specific direction (1-3) or all directions (4)
IDIPOL = 1-3
The dipole moment will be calculated only parallel to the direction of the first, second or third lattice vector, respectively. The corrections for the total energy are calculated as the energy difference between a monopole/dipole and quadrupole in the current supercell and the same dipole placed in a super cell with the corresponding lattice vector approaching infinity.
| Tip: This flag should be used for slab calculations, with the surface normal being the direction in which the IDIPOL is set |
IDIPOL = 4
For IDIPOL=4 the full dipole moment in all directions will be calculated, and the corrections to the total energy are calculated as the energy difference between a monopole/dipole/quadrupole in the current supercell and the same monopole/dipole/quadrupole placed in a vacuum.
| Tip: Use this flag for calculations for isolated molecules. |
Note: strictly speaking quadrupole corrections is not the proper wording. The relevant quantity is
Related tags and articles
Monopole Dipole and Quadrupole corrections, NELECT, EPSILON, DIPOL, LDIPOL, LMONO, EFIELD