dipole matrix element in vasp
Posted: Tue Mar 12, 2013 6:39 am
hi vasp users
I am wondering what is the unit of dipole matrix element in vasp.
CHAM(m,n,NK,ISP,j)= <u_m|- i d/dk_j | u_n> = - <u_m| r_j |u_n>
is it hbar*borh radius ?
I am wondering what is the unit of dipole matrix element in vasp.
CHAM(m,n,NK,ISP,j)= <u_m|- i d/dk_j | u_n> = - <u_m| r_j |u_n>
is it hbar*borh radius ?