Nonlinear phonon modes in second-order anharmonic coupled monoatomic chains

Dubus, Bertrand; Swinteck, N.; Muralidharan, K.; Vasseur, Jerome O.; Deymier, P.

Document type :

Article dans une revue scientifique

DOI :

10.1115/1.4033457

Title :

Nonlinear phonon modes in second-order anharmonic coupled monoatomic chains

Author(s) :

Dubus, Bertrand [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Swinteck, N. [Auteur]
Muralidharan, K. [Auteur]
Vasseur, Jerome O. [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Deymier, P. [Auteur]

Journal title :

Journal of Vibration and Acoustics

Publisher :

American Society of Mechanical Engineers

Publication date :

2016-08-01

ISSN :

1048-9002

HAL domain(s) :

Sciences de l'ingénieur [physics]
Physique [physics]

English abstract : [en]

We have used multiple-time-scales perturbation theory as well as the numerical methods of molecular dynamics and spectral energy density (SED) to investigate the phonon band structure of a two-chain model with second-order ...
Show more >We have used multiple-time-scales perturbation theory as well as the numerical methods of molecular dynamics and spectral energy density (SED) to investigate the phonon band structure of a two-chain model with second-order anharmonic interactions. We show that when one chain is linear and the other is nonlinear, the two-chain model exhibits a nonlinear resonance near a critical wave number due to mode self-interaction. The nonlinear resonance enables wave number-dependent interband energy transfer. We have also shown that there exist nonlinear modes within the spectral gap separating the lower and upper branches of the phonon band structure. These modes result from three phonon interactions between a phonon belonging to the nonlinear branch and two phonons lying on the lower branch. This phenomenon offers a mechanism for phonon splitting.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL

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