Abstract
The interaction of quasi-one-dimensional electrons and longitudinal-optical (LO) phonons is calculated. Results are presented for the polaron correction to the electric subbands and the polaron effective mass. Using improved Wigner-Brillouin perturbation theory, we have investigated in detail the energy-momentum relation for quasi-one-dimensional polarons. It is shown that the dispersion curves of all subbands bend over and are pinned at the phonon continuum above the renormalized ground state. This should result in a spatial oscillation of the electron group velocity in real quantum-well wires.
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