Hi I am studying EEE and we have a subject called devices. we are studying how semiconductors behave and looking at the mobility of electrons and holes. I found often that in tables the mobility of holes is often much less because the effective mass is greater.
Could somebody please explain to me why it is that holes and electrons have different effective masses when the existance of holes arises from symmetry arguments???
Could somebody please explain to me why it is that holes and electrons have different effective masses when the existance of holes arises from symmetry arguments???