arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1107.3306cond-mat.stat-mechnlin.CDphysics.class-ph
收藏

具有非对称相互作用的一维动量守恒晶格中的正常热传导

Normal heat conduction in one dimensional momentum conserving lattices with asymmetric interactions

Yi Zhong, Yong Zhang, Jiao Wang, Hong Zhao

摘要:

对具有非对称相互作用的一维动量守恒晶格系统的热传导行为进行了数值研究。结果表明,在一定的相互作用不对称性下,非平衡定态的热导率收敛于临界极限,这与普遍接受的低维动量守恒系统违反傅立叶定律的观点形成鲜明对比.结果表明,在非平衡定态下,非对称相互作用引起的质量梯度可能提供了非线性相互作用以外的另一种声子散射机制.

英文摘要:

The heat conduction behavior of one dimensional momentum conserving lattice systems with asymmetric interparticle interactions is numerically investigated. It is found that with certain degree of interaction asymmetry, the heat conductivity measured in nonequilibrium stationary states converges in the thermodynamical limit, in clear contrast to the well accepted viewpoint that Fourier's law is generally violated in low dimensional momentum conserving systems. It suggests in nonequilibrium stationary states the mass gradient resulted from the asymmetric interactions may provide an additional phonon scattering mechanism other than that due to the nonlinear interactions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑