Dear Abdulkadir,
I don't remember if I already answer your question but you are right, if we consider the spin we need to multiply the density of state by a factor 2 so the result is the one you are mentioning in your question.
CC
I don't remember if I already answer your question but you are right, if we consider the spin we need to multiply the density of state by a factor 2 so the result is the one you are mentioning in your question.
CC