Temperature dependence of thermal conductivity in 1D nonlinear lattices
| dc.creator | Li, Nianbei | |
| dc.creator | Li, Baowen | |
| dc.date | 2007-03-22 | |
| dc.date.accessioned | 2026-07-07T07:53:10Z | |
| dc.date.available | 2026-07-07T07:53:10Z | |
| dc.description | We examine the temperature dependence of thermal conductivity of one dimensional nonlinear (anharmonic) lattices with and without on-site potential. It is found from computer simulation that the heat conductivity depends on temperature via the strength of nonlinearity. Based on this correlation, we make a conjecture in the effective phonon theory that the mean-free-path of the effective phonon is inversely proportional to the strength of nonlinearity. We demonstrate analytically and numerically that the temperature behavior of the heat conductivity $κ\propto1/T$ is not universal for 1D harmonic lattices with a small nonlinear perturbation. The computer simulations of temperature dependence of heat conductivity in general 1D nonlinear lattices are in good agreements with our theoretic predictions. Possible experimental test is discussed. | |
| dc.description | 6 pages and 2 figures. Accepted for publication in Europhys. Lett | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0703567 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0703567 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/126152 | |
| dc.subject | Disordered Systems and Neural Networks | |
| dc.title | Temperature dependence of thermal conductivity in 1D nonlinear lattices | |
| dc.type | text |