Universality of resonant splitting in superlattices

In this work the resonant splitting effect in semiconductor superlattices a nd magnetic-barrier superlattices is investigated systematically by using t ransfer-matrix method. Universality of characteristics of resonant splittin g is revealed for electron tunneling through these two different kinds of s uperlattices. The results indicate that the common features of resonant spl itting are not only determined by the structure but also by parameters of b uilding blocks. Moreover, in magnetic-barrier superlattices splitting featu re is also related with the tunneling momentum perpendicular to the tunneli ng direction.