ELPH SELFEN CARRIER DEN RANGE: Difference between revisions

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Description: List of the range of carrier density (in <math>cm^{-3}</math>) at which to compute the phonon-mediated electron self-energy and transport coefficients.  
Description: List of the range of carrier density (in <math>cm^{-3}</math>) at which to compute the phonon-mediated electron self-energy and transport coefficients.  
{{Available|6.5.0}}
{{Available|6.5.2}}


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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 {{TAG|NELECT}} and the chemical potential computed for the list of temperatures specified by {{TAG|ELPH_SELFEN_TEMPS}}. A range of carrier densities can be defined using {{TAGO|ELPH_SELFEN_CARRIER_DEN_RANGE|l u n}}, where:
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 {{TAG|NELECT}} and the chemical potential computed. A range of carrier densities can be defined using {{TAGO|ELPH_SELFEN_CARRIER_DEN_RANGE|l u n}}, where:
* ''l'' is the lower limit of the carrier density range.
* ''l'' is the lower limit of the carrier density range.
* ''u'' is the upper limit of the carrier density range.
* ''u'' is the upper limit of the carrier density range.
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<!--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?-->


For example, {{TAGO|ELPH_SELFEN_CARRIER_DEN_RANGE|-1.0 1.0 101}} would create a list of <b>101</b> points around the Fermi level between <math>E_F - 1.0</math> and <math>E_F + 1.0</math>.  
For example, {{TAGO|ELPH_SELFEN_CARRIER_DEN_RANGE|-1e20 1e20 3}} would create a list of <b>3</b> points producing densities of:
elph_selfen_carrier_den=
  -0.100E+21
  -0.100E+41
  -0.100E+61
 
'''This is not correct behavior. This tag should not yet be made public.'''
 
==Related tags and articles==
==Related tags and articles==
* [[Transport coefficients including electron-phonon scattering|Transport calculations]]
* [[Transport coefficients including electron-phonon scattering|Transport calculations]]

Revision as of 13:36, 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 6.5.2

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. 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 (holes are added to) the system, i.e., p-doping.

For example, ELPH_SELFEN_CARRIER_DEN_RANGE = -1e20 1e20 3 would create a list of 3 points producing densities of:

elph_selfen_carrier_den=
 -0.100E+21
 -0.100E+41
 -0.100E+61

This is not correct behavior. This tag should not yet be made public.

Related tags and articles