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Balance equations for steady-state nonlinear electronic transport in the presence of an electric field are established both for a single quasi 1D-heterostructure and for a multiquantum-wire superlattice. The carrier-impurity scatterings, including the background impurities inside the wires and the remote impurities outside the wires, and the carrier-phonon scatterings in the long wavelength limit have been taken into account. The general equations for determining the resistivities are obtained. To discuss the Ohmic mobility formulas,we concentrate on the scatterings at low temperature. The density-density correlation functions in the random phase approximation (RPA) for the wire structures are also studied in some detail.
Balance equations for steady-state nonlinear electronic transport in the presence of an electric field are established both for a single quasi 1D-heterostructure and for a multiquantum-wire superlattice. The carrier-impurity scatterings, including the background impurities inside the wires and the remote The outside equations of the wires, and the carrier-phonon scatterings in the long wavelength limit have been taken into account. The general equations for determining the resistivities are obtained. To discuss the Ohmic mobility formulas, we concentrate on the scatterings at low temperature. The density -density correlation functions in the random phase approximation (RPA) for the wire structures are also studied in some detail.