Modeling of impurity influence on tunneling current in the contact of polymer with quantum dots and metal

In this paper we study an influence of an impurity on conductive properties of a polymer, for example polyacetylene. Based on the Hamiltonian for polymer electrons, we obtain the density of states, which is subsequently recalculated into a tunneling current between the polymer and the metal, as well as quantum dots. We analyze the effect of the impurity on the characteristic properties of the tunneling current.