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arXiv 1504.04048cond-mat.mes-hall
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电导抑制峡谷的热功率特征和光谱学

Thermopower signatures and spectroscopy of the canyon of conductance suppression

G. Kiršanskas, S. Hammarberg, O. Karlström, A. Wacker

摘要:

不同传输通道之间的量子点中的干涉效应可以导致电导的强烈抑制,其像峡谷一样穿过公共电导图[Phys.Rev.Lett. 104,186804(2010)]。在目前的工作中,我们考虑的热电输运性质的峡谷电导抑制使用二阶冯诺依曼方法。我们观察到的热电势的零点的特征信号。这表明,热电测量是一个有趣的互补工具,研究复杂的现象,通过有限的系统传输。

英文摘要:

Interference effects in quantum dots between different transport channels can lead to a strong suppression of conductance, which cuts like a canyon through the common conductance plot [Phys. Rev. Lett. 104, 186804 (2010)]. In the present work, we consider the thermoelectric transport properties of the canyon of conductance suppression using the second-order von Neumann approach. We observe a characteristic signal for the zeros of the thermopower. This demonstrates that thermoelectric measurements are an interesting complimentary tool to study complex phenomena for transport through confined systems.

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