用于交流和直流电阻测量的石墨烯量子霍尔效应器件

2020 Conference on Precision Electromagnetic Measurements (CPEM) Pub Date : 2020-08-01 DOI:10.1109/CPEM49742.2020.9191851

M. Kruskopf, D. Patel, Chieh-I. Liu, A. Rigosi, R. Elmquist, Yicheng Wang, S. Bauer, Yefei Yin, K. Pierz, E. Pesel, M. Götz, J. Schurr

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引用次数: 3

摘要

交流电流下量化霍尔电阻的频率依赖性来自样品内部以及样品与外部部件之间的电容损耗。在这项共同努力中，我们报告了使用超导触点和一种新的触点设计方法对石墨烯基霍尔棒进行交流量子霍尔测量。

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Graphene quantum Hall effect devices for AC and DC resistance metrology

The frequency dependence of the quantized Hall resistance at alternating current results from capacitive losses inside the sample as well as between the sample and external parts. In this joint effort, we report on ac quantum Hall measurements of a graphene-based Hall bar using superconducting contacts and a novel contact design approach.

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2020 Conference on Precision Electromagnetic Measurements (CPEM)

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