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arXiv · 1101.5739

Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction

Dongchan Jeong·Jae-Hyun Choi·Gil-Ho Lee·Sanghyun Jo·Yong-Joo Doh·Hu-Jong Lee
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Abstract

Superconductor-graphene-superconductor (SGS) junction provides a unique platform to study relativistic electrodynamics of Dirac fermions combined with proximity-induced superconductivity. We report observation of the Josephson effect in proximity-coupled superconducting junctions of graphene in contact with Pb1-xInx (x=0.07) electrodes for temperatures as high as T = 4.8K, with a large IcRn (~ 255 microV). This demonstrates that Pb1-xInx SGS junction would facilitate the development of the superconducting quantum information devices and superconductor-enhanced phase-coherent transport of graphene.

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Dongchan Jeong, Jae-Hyun Choi, Gil-Ho Lee, Sanghyun Jo, Yong-Joo Doh, Hu-Jong Lee. 2011-01-30. Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction. https://doi.org/10.1103/physrevb.83.094503

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