Boltzmann transport equation

[ilias-serifi]

hi dear administrators and users
hope that all EPW community doing well

i have a question about the carrier concentration ncarrier , i know in the input this value is fixed (1.10 d+13) for the metals but the question why we use it particularly and how we get this value.



Best regards

[sponce]

Hello,

In the case of metal, you should use the input variable

Code: Select all

assume_metal = .true.

In that case the variable ncarrier is not used since the number of carrier is determined based on the Fermi-Dirac distribution at the Fermi level.
In the code you can track the variable assume_metal to understand better what is being done as well.

Best wishes,
Samuel