Localized vibrational modes in superlattices

Tamura, Shin-ichiro

Physical Review B, 1989, 39(2), 1261-1269

Permalink : https://hdl.handle.net/2115/5949

このアイテムのアクセス数:1,091件（2026-03-17 11:56 集計）

ファイル	フォーマット	サイズ	閲覧回数	説明
PRB39-2	pdf	1.48 MB	1,623

アクセス権	open access
URI	https://hdl.handle.net/2115/5949
タイトル	Localized vibrational modes in superlattices
著者	e-Rad_Researcher 80109488 著者名 Tamura, Shin-ichiro 田村, 信一朗
言語	英語
発行日	1989-01-15
出版者	American Physical Society
収録物名	Physical Review B
巻(号)	39(2)
ページ	1261-1269
抄録	The effect of an impurity cell on the vibrational properties of superlattices is studied theoretically. The continuous equation governing the elastic-wave motion in a superlattice is transformed exactly to a discrete form which is analogous to the equation for the displacement in one-dimensional discrete lattices. With the use of this equation isolated frequencies associated with the vibrations localized near the impurity cell are predicted in the band gaps at the center and boundary of the folded Brillouin zone of the host superlattice. Numerical calculation reveals further the existence of impurity states in the intrazone gaps due to intermode Bragg reflection. The calculated phonon transmission rate shows local enhancements due to these localized states, suggesting their observability by phonon spectroscopic experiment with a quasimonochromatic phonon detector.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright © 1989 American Physical Society
PISSN	0163-1829
関連情報	URI http://www.aps.org/
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevB.39.1261