Thermal Transport in One-Dimensional FPU-FK Lattices

被引:0
|
作者
Zhao Yuan [1 ]
Xue Bao-Xue [1 ]
Wang Yan-Mei [1 ]
Yi Lin [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
关键词
heat conduction; nonlinear dynamics; transport processes; HEAT-CONDUCTION; DYNAMICS; CHAINS;
D O I
暂无
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Thermal transport in the FPU model with FK on-site potential is studied by using fourth-order Runge-Kutta algorithm. The heat flux, local temperature profile, and heat conductivity are simulated and analyzed. It is found that temperature gradient scales behave as N-1 linearly. The divergence of heat conductivity k with system size N is in term of k proportional to N-alpha with alpha = 0.44. It is shown that thermal transport is mainly dependent on the FPU nonlinear and the FK interactions.
引用
收藏
页码:507 / 510
页数:4
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