$usespecgen

$usespecgen is the command to put generation profile with a specific function, which is mostly Gaussian shape generation profile.

$usespecgen
N_region
func_type, A, P1, P2 , P3, P4, P5, P6, P7
1 A hbarW ${\sigma }_x{\sigma }_y$ xc yc
2 A hbarW ${\sigma }_x{\sigma }_y$ xc yc
3 A hbarW ${\sigma }_x{\sigma }_y$ xc yc
4 A hbarW ${\sigma }_y$ yc
5 A hbarW ${\sigma }_x$ xc 

For the function types:

1: If hbarW > Eg, $G(x,y)=A*exp(-\frac{(x-xc{)}^2}{2*{\sigma }_x^2})*exp(-\frac{(y-yc{)}^2}{2*{\sigma }_y^2})$
2: If hbarW > Eg, $G(x,y)=A*exp(-\frac{(x-xc{)}^2}{{\sigma }_x^2})*exp(-\frac{|(y-yc)|}{{\sigma }_y})$
3: If hbarW > Eg, $G(x,y)=A*exp(-\frac{(y-yc{)}^2}{{\sigma }_y^2})*exp(-\frac{|(x-xc)|}{{\sigma }_x})$
4: If hbarW > Eg, $G(x,y)=A*exp(-\frac{-|(y-yc)|}{{\sigma }_y})$
5: If hbarW > Eg, $G(x,y)=A*exp(-\frac{-|(x-xc)|}{{\sigma }_x})$