GGA: Difference between revisions

From VASP Wiki
(Undo revision 2945 by Karsai (talk))
No edit summary
Line 21: Line 21:
|RP || || revised Perdew-Burke-Ernzerhof
|RP || || revised Perdew-Burke-Ernzerhof
|-
|-
|AM || ||AM05<ref name="armiento:prb:05"/><ref name="mattson:jcp:08"/><ref name="mattson:prb:09"/>
|AM || || AM05<ref name="armiento:prb:05"/><ref name="mattson:jcp:08"/><ref name="mattson:prb:09"/>
|-
|HL || || Hendin Lundqvist
|-
|CA || || Ceperley Alder
|-
|PZ || || Ceperley Alder, parametrization of Perdew Zunger
|-
|WI || || Wigner
|-
|RP || || RPBE with Pade Approximation
|-
|VW || || Vosko-Wilk-Nusair (VWN)
|-
|B3 || || B3LYP (Joachim Paier), where LDA part is with VWN3-correlation
|-
|-
|PS || ||Perdew-Burke-Ernzerhof revised for solids (PBEsol)<ref name="perdew:prl:08"/>
|PS || ||Perdew-Burke-Ernzerhof revised for solids (PBEsol)<ref name="perdew:prl:08"/>

Revision as of 11:41, 30 January 2017

GGA = 91 | PE | RP | PS | AM
Default: GGA = type of exchange-correlation in accordance with the POTCAR file 

Description: GGA specifies the type of generalized-gradient-approximation one wishes to use.


This tag was added to perform GGA calculation with pseudopotentials generated with conventional LDA reference configurations.

Possible options are:

91 Perdew -Wang 91
PE Perdew-Burke-Ernzerhof
RP revised Perdew-Burke-Ernzerhof
AM AM05[1][2][3]
HL Hendin Lundqvist
CA Ceperley Alder
PZ Ceperley Alder, parametrization of Perdew Zunger
WI Wigner
RP RPBE with Pade Approximation
VW Vosko-Wilk-Nusair (VWN)
B3 B3LYP (Joachim Paier), where LDA part is with VWN3-correlation
PS Perdew-Burke-Ernzerhof revised for solids (PBEsol)[4]

The tags AM (AM05) and PS (PBEsol) are only supported by VASP.5.X. The AM05 functional and the PBEsol functional are constructed using different principles, but both aim at a decent description of yellium surface energies. In practice, they yield quite similar results for most materials. Both are available for spin polarized calculations.

References


Contents