Plasmonic tuning of near-field heat transfer between graphene monolayers
Plasmonic tuning of near-field heat transfer between graphene monolayers
复制标题
石墨烯单层之间近场传热的等离子体调谐
DOI：
10.1103/physrevb.102.195426
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发表时间：
2020
影响因子：
3.7
通讯作者：
A. Kamenev
中科院分区：
文献类型：
--
作者：
Xuzhe Ying;A. Kamenev
讨论了非平衡双层石墨烯体系中的非辐射传热问题。我们表明，在中性点的热交换是由层间等离子体激元模式为主，并推导出作为温度和层间分离的函数的热流的解析表达式。这些结果表明，对于一系列低温，两个石墨烯层是比传统金属更有效的热交换器。这一现象背后的物理原因是石墨烯光谱中存在能量大、动量小的带间激发。等离子体机制的热传递是急剧抑制静电掺杂。这允许通过在两层之间施加的小电压来调节热交换。
We discuss the non-radiative heat transfer in non-equilibrium double layer graphene system. We show that at the neutrality point the heat exchange is dominated by the inter-layer plasmon modes and derive analytic expressions for the heat current as a function of temperature and the interlayer separation. These results show that for a range of low temperatures the two graphene layers are much more efficient heat exchanger than conventional metals. The physical reason behind this phenomenon is the presence of inter-band excitations with a large energy, and a small momentum in graphene spectrum. Plasmonic mechanism of the heat transfer is sharply suppressed by electrostatic doping. This allows for tuning of the heat exchange by a small applied voltage between the two layers.
接近电荷中性的流体动力电子传输
影响因子：
3.7
作者：
Li, Songci;Levchenko, Alex;Andreev, A. V.
通讯作者：
Andreev, A. V.