NELMGW: Difference between revisions

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{{TAGDEF|NELMGW|[integer]|1}}
{{TAGDEF|NELMGW|[integer]|1}}


Description: {{TAG|NELMGW}} sets the number of self-consistent GW steps, or the number of time steps used during time propagation.
Description: {{TAG|NELMGW}} sets the number of self-consistent GW steps.
Available as of 6.3.0.
Available as of 6.3.0.


----
----
This tag is effective for {{TAG|ALGO}}=EVGW[0] | QPGW[0] | GW[0][R][K] | TIMEEV and ignored otherwise.
This tag is effective for {{TAG|ALGO}}=EVGW[0] | QPGW[0] | GW[0][R][K] and ignored otherwise.
For instance
For instance
  {{TAG|ALGO}} = EVGW0
  {{TAG|ALGO}} = EVGW0
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Omit {{TAG|NBANDS}} and {{TAG|NELM}} to select the [[GW calculations#GW_in_one_go|single-step GW procedure]].
Omit {{TAG|NBANDS}} and {{TAG|NELM}} to select the [[GW calculations#GW_in_one_go|single-step GW procedure]].


When {{TAG|ALGO}} = TIMEEV, VASP will perform a [[Construction:Time-evolution|time-dependent]] calculation. {{TAG|NELMGW}} will determine how many time steps will be performed. If it is lower than 100 VASP will use the default value, 20000. 


== Related tags and articles==
== Related tags and articles==
{{TAG|ALGO}}, [[GW calculations]], [[Construction:Time-evolution]]
{{TAG|ALGO}}, [[GW calculations]]


{{sc|NELMGW|Examples|Examples that use this tag}}
{{sc|NELMGW|Examples|Examples that use this tag}}
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[[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:GW]][[Category:Low-scaling GW and RPA]][[Category:Linear response]]
[[Category:INCAR tag]][[Category:Many-body perturbation theory]][[Category:GW]][[Category:Low-scaling GW and RPA]]

Latest revision as of 12:23, 16 October 2024

NELMGW = [integer]
Default: NELMGW = 1 

Description: NELMGW sets the number of self-consistent GW steps. Available as of 6.3.0.


This tag is effective for ALGO=EVGW[0] | QPGW[0] | GW[0][R][K] and ignored otherwise. For instance

ALGO = EVGW0
NELMGW = 4

performs a partially self-consistent GW calculations, where is updated four times.

Omit NBANDS and NELM to select the single-step GW procedure.


Related tags and articles

ALGO, GW calculations

Examples that use this tag