论文信息 - Graphene quantum Hall effect devices for AC and DC resistance metrology

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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