Article,

Optical phonon modes confinement in quasiperiodic semiconductor superlattice

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MICROELECTRONICS JOURNAL, 36 (3-6): 407-410 (2005)5th International Conference on Low Dimensional Structures and Devices (LDSD 2004), Cancun, MEXICO, DEC 12-17, 2004.
DOI: 10.1016/j.mejo.2005.02.032

Abstract

The dispersion relation and localization profile of confined optical phonon modes propagating in quasiperiodic Fibonacci nitride semiconductor structures are analyzed through a transfer-matrix approach. This substitutional sequence is described in terms of a series of generations that obey peculiar recursion relations and/or inflation rules. We present a quantitative analysis of the localization and magnitude of the allowed band widths in the optical phonon spectra, as well as how they scale as a function of the number of generations of the Fibonacci sequence. (c) 2005 Elsevier Ltd. All rights reserved.

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