Focusing of large-wave-vector phonons in GaAs

Tamura, Shin-ichiro; Harada, Toshiharu

Physical Review B, 1985, 32(8), 5245-5250

Permalink : https://hdl.handle.net/2115/5951

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アクセス権	open access
URI	https://hdl.handle.net/2115/5951
タイトル	Focusing of large-wave-vector phonons in GaAs
著者	e-Rad_Researcher 80109488 著者名 Tamura, Shin-ichiro 田村, 信一朗
著者	著者名 Harada, Toshiharu
言語	英語
発行日	1985-10-15
出版者	American Physical Society
収録物名	Physical Review B
巻(号)	32(8)
ページ	5245-5250
抄録	Focusing of 0- to 1.5-THz transverse-acoustic phonons in GaAs is studied on the basis of an extended rigid-ion model, which reproduces very accurately the observed dispersion curves of acoustic phonons. The shifts of phonon caustics due to lattice dispersion become conspicuous at frequencies above 1 THz. Calculated focusing patterns of ballistic phonons are found to be in good agreement with the characteristic features of phonon images obtained recently by Wolfe and Northrop. We also compare the dispersive shifts of caustics in GaAs with those in Ge and discuss its implication to the phonon-focusing experiments with large-wave-vector phonons.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright © 1985 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.32.5245