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Coupled-mode stop bands of acoustic phonons in semiconductor superlattices
| Title: | Coupled-mode stop bands of acoustic phonons in semiconductor superlattices |
| Authors: | Tamura, S.1 Browse this author →KAKEN DB | | Wolfe, J. P. Browse this author |
| Authors(alt): | 田村, 信一朗1 |
| Issue Date: | 15-Feb-1987 |
| Publisher: | American Physical Society |
| Journal Title: | Physical Review B |
| Volume: | 35 |
| Issue: | 5 |
| Start Page: | 2528 |
| End Page: | 2531 |
| Publisher DOI: | 10.1103/PhysRevB.35.2528 |
| Abstract: | Dispersion relations of acoustic phonons in the (001) GaAs/AlAs superlattice are calculated for arbitrary propagation directions using the continuum approximation with the elastic anisotropy included. We predict the existence of forbidden band gaps inside the folded Brillouin zone in addition to those at the zone boundary and the zone center. They occur by the mixing of different phonon modes having propagation directions oblique to the interfaces. The phonon transmission rates are calculated for superlattices with a finite number of periods, and significant dips are predicted for frequencies corresponding to zone-center, zone-boundary, and coupled-mode stop bands. |
| Rights: | Copyright © 1987 American Physical Society |
| Relation: | http://www.aps.org/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/5959 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 田村 信一朗
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