Miniband properties of superlattice quantum dot arrays fabricated by the edge-defined nanowires

A new scheme to fabricate quantum dot arrays using the edge-defined nanowires is proposed. The three-dimensional quantum size effect due to the nanowire crossing was analyzed by using the finite-difference method taking into account the periodic nature of the superlattices. The quantum dot modes were graphically verified, and the miniband gap between quantum dot and quantum wire modes was quantitatively analyzed.