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首页> 外文期刊>Physical review >Single-electron heat diode: Asymmetric heat transport between electronic reservoirs through Coulomb islands
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Single-electron heat diode: Asymmetric heat transport between electronic reservoirs through Coulomb islands

机译:单电子热二极管:电子库之间通过库仑岛的不对称传热

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摘要

We introduce a functional nanoscale device, a single-electron heat diode, consisting of two quantum dots or metallic islands coupled to electronic reservoirs by tunnel contacts. Electron transport through the system is forbidden but the capacitive coupling between the two dots allows electronic fluctuations to transmit heat between the reservoirs. When the reservoir temperatures are biased in the forward direction, heat flow is enabled by a four-step sequential tunneling cycle, while in the reverse-biased configuration this process is suppressed due to Coulomb blockade effects. In an optimal setup the leakage heat current in the reverse direction is only a few percent of the forward current.
机译:我们介绍了一种功能纳米级器件,即单电子热二极管,它由两个量子点或金属岛组成,这些量子点或金属岛通过隧道接触耦合到电子储层。禁止电子通过系统传输,但是两个点之间的电容耦合允许电子波动在储液器之间传递热量。当储层温度沿正向偏置时,可通过四步顺序隧穿循环启用热流,而在反向偏置配置中,由于库仑阻塞效应,该过程受到抑制。在最佳设置中,反向的泄漏热电流仅为正向电流的百分之几。

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