Effect of phonon-phonon interactions on localization.
Phys Rev Lett
; 100(13): 134301, 2008 Apr 04.
Article
en En
| MEDLINE
| ID: mdl-18517956
We study the heat current J in a classical one-dimensional disordered chain with on-site pinning and with ends connected to stochastic thermal reservoirs at different temperatures. In the absence of anharmonicity all modes are localized and there is a gap in the spectrum. Consequently J decays exponentially with system size N. Using simulations we find that even a small amount of anharmonicity leads to a J approximately 1/N dependence, implying diffusive transport of energy.
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01-internacional
Base de datos:
MEDLINE
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En
Revista:
Phys Rev Lett
Año:
2008
Tipo del documento:
Article
País de afiliación:
India
Pais de publicación:
Estados Unidos