Phonon engineering with acoustic nanocavities: Theoretical considerations on phonon molecule band structures, and acoustic Bloch oscillations

N. D. Lanzillotti-Kimura; A. Fainstein; C. A. BalseiroB. Jusserand

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Phonon engineering with acoustic nanocavities: Theoretical considerations on phonon molecule band structures, and acoustic Bloch oscillations

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摘要

Acoustic nanocavities display localized acoustic states similar to the confined electronic levels in atoms and quantum wells. Exploiting this parallel and concepts used in photonics, we describe novel acoustic devices operative in the THz range (nm wavelength) based on cavities as the basic building block. These include phonon molecules, acoustic minibands, structures displaying acoustic Wannier-Stark ladders and Bloch oscillations, and devices with generalized engineered phonon potentials and confined energy states. We demonstrate that both the spectra and the dynamics of acoustic waves can be tailored with great versatility in these devices.

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《Physical review, B. Condensed matter and materials physics》 |2007年第2期|024301.1-024301.11|共9页
作者
N. D. Lanzillotti-Kimura; A. Fainstein; C. A. BalseiroB. Jusserand;
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作者单位

Centro Atomico Bariloche & Instituto Balseiro, C.N.E.A., 8400 S. C. de Bariloche, R. N., Argentina;

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正文语种英语
中图分类固体物理学;
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phonons or vibrational states in low-dimensional structures and anoscale materials; mechanical and acoustical properties; phonon states and bands; normal modes; and phonon dispersion;

Phonon engineering with acoustic nanocavities: Theoretical considerations on phonon molecule band structures, and acoustic Bloch oscillations

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