Title:	Effect of phonon-phonon interactions on localization
Authors:	Dhar, Abhishek Lebowitz, J.L.
Issue Date:	Apr-2008
Publisher:	American Physical Society
Citation:	Physical Review Letters, 2008, Vol.100, 134301
Abstract:	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~1/N dependence, implying diffusive transport of energy.
Description:	Open Access.
URI:	http://hdl.handle.net/2289/3577
ISSN:	E-ISSN: 1079-7114 P-ISSN: 0031-9007
Alternative Location:	http://dx.doi.org/10.1103/PhysRevLett.100.134301 http://arxiv.org/abs/0708.4171
Copyright:	2008 The American Physical Society
Appears in Collections:	Research Papers (TP)

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