Optical Phonon Modes in a Semiconductor Nanostructure

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Abstract

In the framework of continuum dielectric approximation, the surface optical (SO) phonon modes of a quantum wire of  GaAs imbedded in a polar semiconductor GaxAl1-xAs have been investigated. Two branches of SO phonon modes were derived (SO1, SO2).When the wave vector, ( ), increases, the frequency of each SO modesis converged to the frequency of the single planar heterostructure

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