Recently, we showed that plasmon-exciton coupling can increase entropy current through a bridge coupled to plasmonic metal nanoparticles. Here we show that electron-phonon coupling can also be used to control the entropy current in similar systems. Entropy current tends to decrease due to electron-phonon coupling and to exhibit a monotonous decrease upon temperature ramping. However, an anomaly affecting the current where it is enhanced by electron-phonon coupling is indicated at around 42 times the system's Kondo temperature. We therefore report means to control heat flow by tuning the Kondo resonance through the electron-phonon coupling. We analyze the conditions that bring about these trends due to electron-phonon coupling by employing non-equilibrium Green's function formulation addressing the entropy current and the derived heat flow.

最近，我们表明等离激元-激子耦合可以通过耦合到等离激元金属纳米粒子的桥来增加熵电流。在这里，我们证明了电子-声子耦合也可以用于控制类似系统中的熵电流。由于电子-声子耦合，熵电流趋于减小，并且随着温度的升高，熵电流呈现单调的下降。但是，在系统近藤温度的约42倍处显示出影响电流的异常现象，该异常通过电子-声子耦合而增强。因此，我们报告了通过电子声子耦合调节近藤共振来控制热流的手段。我们通过采用非平衡格林函数公式来分析熵电流和导出的热流，分析了由于电子-声子耦合而导致这些趋势的条件。