Condensed Matter and Statistical Physics Journal Club
| Date: | February 25, 2008 |
| Title: | Effect of phonon-phonon interactions on localization |
| Speaker: | Abhishek Dhar (Raman Research Institute,Bangalore) |
| Abstract: | I will discuss results on heat conduction in a classical one-dimensional disordered chain with onsite 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 the heat current decays exponentially with system size. Using simulations we find that even a small amount of anharmonicity leads to diffusive transport of energy. |