Graded anharmonic crystals as genuine thermal diodes: analytical description of rectification and negative differential thermal resistance.
Graded anharmonic crystals as genuine thermal diodes: analytical description of rectification and negative differential thermal resistance.
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DOI：
10.1103/physreve.82.040101
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发表时间：
2010-10
期刊：
影响因子：
--
通讯作者：
E. Pereira
中科院分区：
文献类型：
--
作者：
E. Pereira
我们从物质的微观模型开始进行热流研究：我们开发了一种方法并研究了一些具有弱粒子间相互作用的非和谐分级质量晶体。我们计算了热导率，并证明了整流和负微分热阻的存在。我们的形式主义使我们能够理解现象背后的机制，并表明梯度材料的特性使它们成为真正的热二极管。
We address the heat flow study starting from microscopic models of matter: we develop an approach and investigate some anharmonic graded mass crystals, with weak interparticle interactions. We calculate the thermal conductivity, and show the existence of rectification and negative differential thermal resistance. Our formalism allows us to understand the mechanism behind the phenomena, and shows that the properties of graded materials make them genuine thermal diodes.