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arXiv · 2212.02615

The study of contact properties in edge-contacted graphene-aluminum Josephson junctions

Zhujun Huang·Neda Lotfizadeh·Bassel H. Elfeky·Kim Kisslinger·Edoardo Cuniberto·Peng Yu·Mehdi Hatefipour·Takashi Taniguchi·Kenji Watanabe·Javad Shabani·Davood Shahrjerdi
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Abstract

Transparent contact interfaces in superconductor-graphene hybrid systems are critical for realizing superconducting quantum applications. Here, we examine the effect of the edge-contact fabrication process on the transparency of the superconducting aluminum-graphene junction. We show significant improvement in the transparency of our superconductor-graphene junctions by promoting the chemical component of the edge contact etch process. Our results compare favorably with state-of-the-art graphene Josephson junctions. The findings of our study contribute to advancing the fabrication knowledge of edge-contacted superconductor-graphene junctions.

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Zhujun Huang, Neda Lotfizadeh, Bassel H. Elfeky, Kim Kisslinger, Edoardo Cuniberto, Peng Yu, Mehdi Hatefipour, Takashi Taniguchi, Kenji Watanabe, Javad Shabani, Davood Shahrjerdi. 2022-12-05. The study of contact properties in edge-contacted graphene-aluminum Josephson junctions. https://doi.org/10.1063/5.0135034

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