LUSE VDW: Difference between revisions

Revision as of 10:33, 16 February 2023

LUSE_VDW = [logical]
Default: LUSE_VDW = .FALSE.

Description: LUSE_VDW=.TRUE. switches on the use of a nonlocal vdW-DF functional. These functionals depend on the electron density at two points in space and model long-range van der Waals (dispersion) correlation effects.

Mind: In versions of VASP prior to 6.4.0, a meta-GGA functional (e.g., SCAN) could be combined only with the rVV10 nonlocal functional. Conversely, a GGA functional could be combined only with the original nonlocal functional of Dion et al.. This restriction is lifted since VASP.6.4.0 thanks to the introduction of the IVDW_NL tag.

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-For LDA and GGA functionals ({{TAG|GGA}} tag), a variant of the [[Nonlocal vdW-DF functionals|vdW-DF functional of Langreth and Lundqvist et al.]] is used, whereas for the meta-GGA functionals ({{TAG|METAGGA}} tag), the [[Nonlocal vdW-DF functionals|rVV10 functional]] is selected. See [[nonlocal vdW-DF functionals]] for more details.
+{{NB|mind|In versions of VASP prior to 6.4.0, a meta-GGA functional (e.g., SCAN) could be combined only with the rVV10 nonlocal functional. Conversely, a GGA functional could be combined only with the original nonlocal functional of Dion ''et al.''. This restriction is lifted since VASP.6.4.0 thanks to the introduction of the {{TAG|IVDW_NL}} tag.}}
 == Related tags and articles ==