ELPH SELFEN CARRIER DEN RANGE: Difference between revisions

From VASP Wiki
No edit summary
No edit summary
Line 10: Line 10:
* ''u'' is the upper limit of the carrier density range.
* ''u'' is the upper limit of the carrier density range.
* ''n'' is the number of steps between the two limits.
* ''n'' is the number of steps between the two limits.
{{NB|important|When ''l'' or ''u'' is set to positive, electrons are added, i.e., ''n''-doping; when negative. When ''l'' or ''u'' is set to negative, electrons are removed from the system, i.e., ''p''-doping.}}
{{NB|important|When ''l'' or ''u'' is set to positive, electrons are added, i.e., ''n''-doping. When ''l'' or ''u'' is set to negative, electrons are removed from the system, i.e., ''p''-doping.}}
<!--This can be useful for producing contour plots, e.g., of the ZT figure of merit link to elph-part5 tutorial + add in the list of mu in the OUTCAR?-->
<!--This can be useful for producing contour plots, e.g., of the ZT figure of merit link to elph-part5 tutorial + add in the list of mu in the OUTCAR?-->



Revision as of 10:13, 15 October 2025

ELPH_SELFEN_CARRIER_DEN_RANGE = [real array] 

Description: List of the range of carrier density (in [math]\displaystyle{ cm^{-3} }[/math]) at which to compute the phonon-mediated electron self-energy and transport coefficients.

Mind: Available as of VASP 6.5.0

From each carrier density specified in the array, a positive (electron doping) or negative (hole doping) number of electrons is added to the value of NELECT and the chemical potential computed for the list of temperatures specified by ELPH_SELFEN_TEMPS. A range of carrier densities can be defined using ELPH_SELFEN_CARRIER_DEN_RANGE = l u n, where:

  • l is the lower limit of the carrier density range.
  • u is the upper limit of the carrier density range.
  • n is the number of steps between the two limits.
Important: When l or u is set to positive, electrons are added, i.e., n-doping. When l or u is set to negative, electrons are removed from the system, i.e., p-doping.

For example, ELPH_SELFEN_CARRIER_DEN_RANGE = -1.0 1.0 101 would create a list of 101 points around the Fermi level between [math]\displaystyle{ E_F - 1.0 }[/math] and [math]\displaystyle{ E_F + 1.0 }[/math].

Related tags and articles