Coulumb correlations in hopping through a thin layer

A detailed microscopic investigation of the effect of Coulomb correlations on the inelastic contribution to tunneling via localized states through thin amorphous barriers is presented. The theoretical calculation together with experimental results show that Coulomb correlations play an important role and also imply that localized states whose single-particle energies lie well below the Fermi level participate in transport due to the Coulomb correlations.