Dr Paul Kinsler. [Acknowledgements & Feedback]
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<> JN: JOURNAL OF APPLIED PHYSICS, 1993, Vol.74, No.3, pp.2097-2099 <> IS: 0021-8979 <> DT: Note <> AB: The important role of confined longitudinal optical (LO) and surface <> optical (SO) phonons is investigated for different types of <> individual scattering processes in AlGaAs/GaAs quantum wires. <> Electron wave function tailing due to finite barrier height has been <> properly taken into account. We demonstrate that for highly confined <> wires structures L(y) = L(z) = 40 angstrom, forward and backward <> scattering are dominated by SO phonons. For 80 angstrom x 80 angstrom <> structures, forward scattering is still predominately by SO phonons <> while backward scattering is dominated by confined LO phonons. <> Finally, for 150 angstrom x 150 angstrom, confined phonons control <> both forward and backward scattering. However, we demonstrate that <> confined LO phonons play a dominant role in intersubband transitions <> even in highly confined structures, and that it has the most <> significant effect on the backward scattering in quantum wires of <> L(y) = L(z) > 80 angstrom.
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