液氦表面关联电子系统的热电输运
Thermoelectric transport in a correlated electron system on the surface of liquid helium
摘要：
本文报道了在液氦表面形成的非简并关联电子系统中的热电输运的直接观测结果。我们发现，微波诱导的激发的电子之间的表面束缚态的垂直跃迁导致其横向流动，我们能够通过采用分段电极配置检测。我们表明，这种电子流的产生是由于塞贝克效应，因此我们的方法提供了一个新的工具来研究热电性的无序相关电子系统。我们的实验结果与基于动力学方程的理论计算符合得很好，并适当考虑了快速电子-电子碰撞。
英文摘要：
We report on the direct observation of the thermoelectric transport in a nondegenerate correlated electron system formed on the surface of liquid helium. We find that the microwave-induced excitation of the vertical transitions of electrons between the surface-bound states leads to their lateral flow, which we were able to detect by employing a segmented electrode configuration. We show that this flow of electrons arises due to the Seebeck effect, thus our method provides a new tool to study thermoelectricity in a disorder-free correlated electron system. Our experimental results are in good agreement with the theoretical calculations based on kinetic equations, with proper account of fast electron-electron collisions.
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