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

doi:10.1063/5.0135034

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

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

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.

Original language	English (US)
Article number	243503
Journal	Applied Physics Letters
Volume	121
Issue number	24
DOIs	https://doi.org/10.1063/5.0135034
State	Published - Dec 12 2022

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/5.0135034

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title = "The study of contact properties in edge-contacted graphene-aluminum Josephson junctions",

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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T1 - The study of contact properties in edge-contacted graphene-aluminum Josephson junctions

AU - Huang, Zhujun

AU - Lotfizadeh, Neda

AU - Elfeky, Bassel H.

AU - Kisslinger, Kim

AU - Cuniberto, Edoardo

AU - Yu, Peng

AU - Hatefipour, Mehdi

AU - Taniguchi, Takashi

AU - Watanabe, Kenji

AU - Shabani, Javad

AU - Shahrjerdi, Davood

PY - 2022/12/12

Y1 - 2022/12/12

N2 - 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.

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

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