Acoustic phonon modes of rectangular quantum wires

Nishiguchi, N.; Ando, Y.; Wybourne, M. N.

Journal of Physics: Condensed Matter, 1997, 9(27), 5751-5764

Permalink : https://hdl.handle.net/2115/49626

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アクセス権
open access
URI
https://hdl.handle.net/2115/49626
タイトル
Acoustic phonon modes of rectangular quantum wires
著者
Nishiguchi, N. ; Ando, Y. ; Wybourne, M. N.
e-Rad_Researcher
40175518
著者名
Nishiguchi, N.
著者名
Ando, Y.
著者名
Wybourne, M. N.
言語
英語
キーワード
Quantum wires
honon states and bands, normal modes, and phonon dispersion
Elasticity
Acoustical properties of solids
Elasticity and anelasticity, stress-strain relations
発行日
1997
出版者
IOP
収録物名
Journal of Physics: Condensed Matter
巻(号)
9(27)
ページ
5751-5764
抄録
Acoustic phonon modes of a free-standing rectangular quantum wire of cubic crystals are theoretically investigated using an algorithm developed to analyze data from resonant ultrasound spectroscopy. The normal phonon modes are classi ed by their spatial symmetries into a compressional mode termed the dilatational mode and non-compressional modes referred to as the exural, torsional and shear modes. The formalism we present is quite general and can be applied to wires of any cubic material. As an example, the dispersion relations are obtained for square and rectangular wires of GaAs, taking into account anisotropic elasticity of the material. The dispersion curves for a rectangular wire are compared with those of the approximate hybrid modes referred to as the thickness and width modes, and the validity of the modes is discussed. The existence of edge modes is con rmed by examining the spatial distribution of displacement vectors.
資源タイプ
学術雑誌論文
出版タイプ
Accepted Manuscript
権利情報
Copyright © 1997 IOP Publishing Ltd.
PISSN
0953-8984
EISSN
1361-648X
NCID
AA10672168
関連情報
URI
http://iopscience.iop.org/0953-8984
関連情報 (isVersionOf)
出版社版DOI
https://doi.org/10.1088/0953-8984/9/27/007