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arXiv · 1210.4987

Tunneling Spectroscopy of Graphene using Planar Pb Probes

Yanjing Li·Nadya Mason
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Abstract

We show that evaporating lead (Pb) directly on graphene can create high-yield, high-quality tunnel probes, and we demonstrate high magnetic field/low temperature spectroscopy using these probes. Comparisons of Pb, Al and Ti/Au probes shows that after oxidation a well-formed self-limited tunnel barrier is created only between the Pb and the graphene. Tunneling spectroscopy using the Pb probes manifests energy-dependent features such as scattering resonances and localization behavior, and can thus be used to probe the microscopic electronics of graphene.

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Yanjing Li, Nadya Mason. 2012-10-17. Tunneling Spectroscopy of Graphene using Planar Pb Probes. https://doi.org/10.1063/1.4775600

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