High Quality Superconductor–Normal Metal Junction Made on the Surface of MoS2 Flakes

Qihong Chen, Lei Liang, Abdurrahman Ali El Yumin, Jianming Lu, Oleksandr Zheliuk, Jianting Ye

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Abstract

A superconductor–normal metal (SN) junction is fabricated on the surface of a few-layer MoS2 flake. Superconductivity is induced by ionic liquid gating, and an h-BN flake is used to locally separate ionic liquid from the surface of MoS2. The h-BN covered channel remains semiconducting, therefore an SN junction forms at the interface between the exposed and h-BN covered MoS2 channel. Transport properties at the SN junction are studied at low temperatures and under magnetic fields. The probability of observing Andreev reflection is discussed based on the BTK model.
Original languageEnglish
Article number1700181
Number of pages5
JournalPhysica Status Solidi B-Basic Solid State Physics
Volume254
Issue number11
DOIs
Publication statusPublished - Nov-2017

Keywords

  • SEMICONDUCTOR
  • FILMS
  • GATED MOS2
  • superconductor-normal metal junctions
  • transition metal dichalcogenides
  • ionic gating
  • MoS2
  • superconductivity

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