$usefieldmufunc

This function modifies the calculation method of mobility. Both electron and hole mobilities are considered electrical field-dependent terms with the default. However, you can define this function by using function usefielddependent_n(indEl, matind ,Ex,Ey,T,xp,yp) and function usefielddependent_p(indEl, matind, Ex, Ey, T, xp, yp).
The default follows the equation:

$\mu ={\mu }_0\times exp(\beta \sqrt{F})$,

where

• $\mu$ is the mobility,
• ${\mu }_0$ is the zero-field mobility,
• $\beta$ is the factor of the field dependence, and
• $F$ is the localized electric field.

Format

$usemunpfunc
    1  ${\mu }_e$  ${\beta }_e$  ${\mu }_h$  ${\beta }_h$

Parameter explanation

• ${\mu }_e$: the zero-field mobility of electron. $(c{m}^{2}e{V}^{-1}{s}^{-1})$
• ${\beta }_e$: the factor of electron. $(e{V}^{-1/2})$
• ${\mu }_h$: the zero-field mobility of hole. $(c{m}^{2}e{V}^{-1}{s}^{-1})$
• ${\beta }_h$: the factor of hole. $(e{V}^{-1/2})$

Related commands

function usefielddependent_n(indEl, matind ,Ex,Ey,T,xp,yp), function usefielddependent_p(indEl, matind, Ex, Ey, T, xp, yp), $useemunfunc, $useemupfunc