Spin-boson thermal rectifier
Spin-boson thermal rectifier
复制标题
DOI：
10.1103/physrevlett.94.034301
复制
发表时间：
2005-01-28
影响因子：
8.6
通讯作者：
Nitzan, A
中科院分区：
文献类型：
--
作者：
Segal, D;Nitzan, A
通过将系统固有的非谐性与结构不对称性相结合，可以实现纳米器件中热传递的校正。我们在最简单的非谐系统--自旋-玻色子纳米结模型中分析了这一现象。我们考虑了该模型的两个变种，它们第一次给出了解析解：一个线性可分离模型，其中热库贡献是相加的；一个不可分离模型，适用于更强的系统-浴场相互作用。当与热库的耦合不同时，两种模型都表现出不对称(整流)热传导。
Rectification of heat transfer in nanodevices can be realized by combining the system inherent anharmonicity with structural asymmetry. We analyze this phenomenon within the simplest anharmonic system-a spin-boson nanojunction model. We consider two variants of the model that yield, for the first time, analytical solutions: a linear separable model in which the heat reservoirs contribute additively, and a nonseparable model suitable for a stronger system-bath interaction. Both models show asymmetric (rectifying) heat conduction when the couplings to the heat reservoirs are different.