Tuning supercurrent in Josephson field effect transistors using h-BN dielectric: Part 2, Characterization

POSTER

Abstract

Josephson junction field effect transistors (JJ-FET) based on semiconductor weak-links can provide voltage-controlled supercurrent. Conventionally high-K dielectrics such as AlOx are used on FETs or JJ-FETS, here we introduce h-BN as an alternative gate dielectric for epitaxial Al/InAs JJ-FETs. This could solve several niche difficulties: 1. Reducing surface chemistry and defect formation. 2. Prevents microwave absorption. 3. Find use as a tunnel barrier. We investigate the Josephson properties of JJ-FETs fabricated with thin h-BN flakes (5 nm - 10 nm) and show high transparency of JJ-FET from epitaxial contacts are preserved. We also find that the product of normal resistance, Rn and critical current, Ic, is comparable for devices with hBN and AlOx dielectrics. However we observe differences in normal resistance of the junctions that suggest surface chemistry has not been affected by hBN compared to AlOx.

Presenters

  • Fatemeh Barati

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • Department of Physics, New York University
    • University of California, Riverside

Authors

  • Fatemeh Barati

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • Department of Physics, New York University
    • University of California, Riverside

  • Josh P. Thompson

    • University of Arkansas
    • Physics, University of Arkansas

  • Matthieu Dartiailh

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU
    • Center for Quantum Phenemena, Department of Physics, New York University
    • Center for Quantum Phenomena, Department of Physics, New York University, New York, New York

  • Kasra Sardashti

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU

  • William a Mayer

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU

  • Joseph Yuan

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU
    • Center for Quantum Phenomena, Department of Physics, New York University, New York, New York

  • Kaushini S Wickramasinghe

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU
    • New York University

  • Takashi Taniguchi

    • National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institure for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science
    • NIMS
    • National Institute of Materials Science
    • National Institute for Materials Science (NIMS)
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science,1-1 Namiki
    • National Institute of Material Science
    • National Institute for Materials Science, Tsukuba, Japan
    • International Center for Materials Nanoarchitectonics, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institude for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials
    • NIMS - Japan
    • National Institute for Materials Science ,Japan
    • National Institute for Materials Science, Tsukuba, 305-0044, Ibaraki, Japan
    • National Institute for Material Science
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science Japan
    • 8International Center for Materials Nanoarchitectonics
    • NIMS Tsukuba
    • National Institute for Materials Science: Namiki, Tsukuba, Ibaraki, JP
    • National Institue for Material Science
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National In
    • Research Center for Functional Materials, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • International Center for Material Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics
    • NIMS Suguba
    • NIMS, Tsukuba, Japan
    • National Cheng Kung University
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Ibaraki, Japan
    • National institute of material science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • Advanced Materials Laboratory, NIMS
    • National Institute for Materials Science, International Center for Materials Nanoarchitectonics
    • National Institute of Material Science, Japan
    • Tsukuba, National Institute for Materials Science

  • Kenji Watanabe

    • National Institute for Materials Science
    • National Institute for Materials Science, Japan
    • National Institure for Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science
    • NIMS
    • National Institute of Materials Science
    • National Institute for Materials Science (NIMS)
    • Research Center for Functional Materials, National Institute for Materials Science
    • National Institute for Materials Science,1-1 Namiki
    • National Institute of Material Science
    • National Institute for Materials Science, Tsukuba, Japan
    • Research Center for Functional Materials, NIMS
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institude for Materials Science
    • National Institute for Materials Science, Tsukuba, Ibaraki, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials
    • NIMS - Japan
    • National Institute for Materials Science ,Japan
    • National Institute for Materials Science, Tsukuba, 305-0044, Ibaraki, Japan
    • National Institute for Material Science
    • National Institute for Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science Japan
    • NIMS Tsukuba
    • National Institute for Materials Science, Research Center for Functional Materials, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Materials Science: Namiki, Tsukuba, Ibaraki, JP
    • National Institue for Material Science
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
    • Materials, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, Research Center for Functional Materials, National In
    • Research Center for Functional Materials, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials nanoarchtectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • NIMS Suguba
    • NIMS, Tsukuba, Japan
    • National Institute for Materials Science, Namiki 1-1, Tsukuba, 305-0044, Ibaraki, Japan
    • National institute of material science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • Advanced Materials Laboratory, NIMS
    • Research Center for Functional Materials, National Institute for Materials Science, Ibaraki, Japan
    • National Institute for Materials Science, Research Center for Functional Materials
    • National Institute of Material Science, Japan
    • Tsukuba, National Institute for Materials Science

  • Hugh O. H. Churchill

    • University of Arkansas
    • Department of Physics, University of Arkansas
    • Physics, University of Arkansas

  • Javad Shabani

    • New York Univ NYU
    • Center for Quantum Phenomena, Department of Physics, New York University
    • NYU
    • Center for Quantum Phenemena, Department of Physics, New York University
    • New York University
    • Center for Quantum Phenomena, Department of Physics, New York University, New York, New York