期刊
PHYSICA B-CONDENSED MATTER
卷 404, 期 2, 页码 329-334出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physb.2008.11.006
关键词
Localized interface phonon polaritons; Superlattice; Structural defect; Ternary mixed crystal
资金
- Hunan Provincial Natural Science Foundation of China [07JJ3114]
- Scientific Research Fund of Central South University of Forestry and Technology, China [07012B]
Using a transfer matrix method, we investigate the existence and characteristics of the localized interface phonon-polariton modes (IPPMs) in superlattice (SL) with a structural defect consisting of ternary mixed crystal (AlxGa1-xAs). The results show that the introduction of two-mode behavior of the ternary mixed crystal leads to the rich and varied localized IPPMs spectra with new features. The characteristics and positions of the localized IPPMs in the Reststrahlen region are strongly dependent on the concentration x of the ternary mixed crystal. Moreover, it is found that the localized IPPMs are sensitive to the thicknesses of the defect and constituent layers as well as to the transverse wavenumber q(II). Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
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