FERWE: Difference between revisions

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In the case of spin-polarized calculations ({{TAG|ISPIN}}=2), {{TAG|FERWE}} sets the occupancies of the states in the up-spin channel. Specify the occupancies of the states in the down-spin channel by means of the {{TAG|FERDO}} tag.
In the case of spin-polarized calculations ({{TAG|ISPIN}}=2), {{TAG|FERWE}} sets the occupancies of the states in the up-spin channel. Specify the occupancies of the states in the down-spin channel by means of the {{TAG|FERDO}} tag.


{{NB|mind|This method requires the use of {{TAG|POTCAR}} files from the PAW dataset version 52 or later.}}
{{NB|mind|If the calculation stops when reading {{TAG|FERWE}}, then this may be due to an automatic increase of the number of bands {{TAG|NBANDS}} in parallel calculation.}}


== Related tags and articles ==
== Related tags and articles ==

Revision as of 13:09, 6 June 2023

FERWE = [real array] 

Description: FERWE sets the occupancies of the states for ISMEAR=-2.


To set the occupancies, specify

 FERWE = f(1) f(2) f(3) ... f(NBANDS×Nk)

The occupancies must be specified for all bands and k points. The band index runs fastest. The occupancies must be between 0 and 1.

In the case of spin-polarized calculations (ISPIN=2), FERWE sets the occupancies of the states in the up-spin channel. Specify the occupancies of the states in the down-spin channel by means of the FERDO tag.


Mind: If the calculation stops when reading FERWE, then this may be due to an automatic increase of the number of bands NBANDS in parallel calculation.

Related tags and articles

FERDO, ISMEAR

Examples that use this tag