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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Acoustic phonon modes and dispersion relations of nanowire superlattices
| Title: | Acoustic phonon modes and dispersion relations of nanowire superlattices |
| Authors: | Mizuno, Seiji Browse this author | | Nishiguchi, Norihiko Browse this author →KAKEN DB |
| Issue Date: | 2009 |
| Publisher: | IOP Publishing |
| Journal Title: | Journal of Physics: Condensed Matter |
| Volume: | 21 |
| Issue: | 19 |
| Start Page: | 195303 |
| Publisher DOI: | 10.1088/0953-8984/21/19/195303 |
| PMID: | 21825477 |
| Abstract: | We study theoretically acoustic phonon modes in nanowire superlattices (NWSLs) composed of cubic materials. We classify the acoustic phonon modes in rectangular and square cross-section NWSLs, based on group theory. For NWSLs consisting of GaAs and AlAs, we calculate numerically the dispersion relations of each phonon mode and corresponding displacement fields. We examine the effects of both the lateral confinement and superlattice modulation along the wire axis. The results suggest that peculiar electron–phonon interactions occur because the vibrations of both the lateral and longitudinal confining potentials induce scattering potential in addition to the deformation and piezoelectric potentials. |
| Rights: | Copyright ©2009 IOP Publishing Ltd. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/47119 |
| 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: 西口 規彦
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