  In this paper, we discuss the topological and transport properties of binary
heterostructures of different topological materials. Using the
Su-Schrieffer-Heeger model and the method of Green's functions, we calculate
and characterize the edge states of these heterostructures. We study the
topological phase through an invariant calculated from the Zak phase in order
to build phase diagrams. We obtained an analytical result that allows us to
find the topological phase diagram for a one-dimensional general chain and for
heterostructures from the cross band condition. We also calculate the
differential conductance with the non-equilibrium Green function technique
showing the tunneling of the edge states and discussing its possible design and
experimental application.
