arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.07315cond-mat.mes-hall
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拓扑边态双端组态非线性冷却的详细研究

Detailed study of nonlinear cooling with two-terminal configurations of topological edge states

Fatemeh Hajiloo, Pablo Terrén Alonso, Nastaran Dashti, Liliana Arrachea, Janine Splettstoesser

摘要:

研究了量子自旋霍尔系统的非线性热电制冷特性。该装置由纳米磁体接触的Kramers的螺旋边缘状态对,导致在传输概率与丰富的结构,包含峰,井型,和阶梯型功能。我们在很大程度上基于分析结果,详细分析了所有这些功能对冷却性能的影响。我们分析了冷却功率以及设备的性能系数。由于我们研究的基本特征可能存在于其他介观导体的传输函数中,因此我们的结论为分析一类广泛的量子器件的非线性热电行为提供了有用的见解。所有这些属性的组合定义的量子自旋霍尔设置的响应,为此,我们提供了一些现实的估计条件限制和优化其操作作为一个冷却设备。

英文摘要:

We study the nonlinear thermoelectric cooling performance of a quantum spin Hall system. The setup consists of a nanomagnet contacting a Kramers' pair of helical edge states, resulting in a transmission probability with a rich structure containing peaks, well-type, and step-type features. We present a detailed analysis of the impact of all these features on the cooling performance, based to a large extent on analytical results. We analyze the cooling power as well as the coefficient of performance of the device. Since the basic features we study may be present in the transmission function of other mesoscopic conductors, our conclusions provide useful insights to analyze the nonlinear thermoelectric behavior of a wide class of quantum devices. The combination of all these properties define the response of the quantum spin Hall setup, for which we provide some realistic estimates for the conditions limiting and optimizing its operation as a cooling device.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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