Clean 2D superconductivity in a bulk van der Waals superlattice

ORAL

Abstract

Recent interest in bulk van der Waals systems has been driven by the search for exotic physics in thin flakes exfoliated from bulk crystals and, more broadly, the desire to add novel functionalities to those available in the van der Waals heterostructure toolkit. This top down approach has proved successful in unveiling novel phenomena, the MX2 transition metal dichalcogenides being one such case where both flakes and heterostructures have been used to uncover and design exotic ground states, respectively. However, such devices have intrinsic limitations that can impede powerful experimental probes or prevent the realization of exotic physics in the first place due to disorder introduced through the fabrication process. Here, we report experimental evidence for a possible solution in the form of a bulk single crystal, van der Waals superlattice that simultaneously exhibits high cleanliness and two-dimensional superconductivity.

*National Science Foundation - DMR-1231319
Office of Naval Research - N00014-17-12883
U.S. Department of Energy - DE-SC0019300
Gordon and Betty Moore Foundation - GBMF3848

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Presenters

  • Aravind Devarakonda

    • Department of Physics, Massachusetts Institute of Technology MIT

Authors

  • Aravind Devarakonda

    • Department of Physics, Massachusetts Institute of Technology MIT

  • Hisashi Inoue

    • Frontier Research Institute of Interdisciplinary Sciences, Tohoku University
    • Tohoku University
    • Massachusetts Institute of Technology MIT

  • Shiang Fang

    • Harvard University
    • Department of Physics and Astronomy, Rutgers University
    • Harvard
    • Department of Physics, Harvard University
    • Physics, Harvard University

  • Cigdem Ozsoy Keskinbora

    • Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University

  • Takehito Suzuki

    • Department of Physics, Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT
    • Physics, MIT

  • Markus Kriener

    • RIKEN Center for Emergent Matter Science
    • RIKEN CEMS
    • Center for Emergent Matter Science (CEMS), RIKEN

  • Liang Fu

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT
    • Department of Physics, Massachusetts Institute of Technology MIT
    • Physics, MIT
    • Physics, Massachusetts Institute of Technology
    • MIT

  • Efthimios Kaxiras

    • Harvard University
    • Department of Physics, Harvard University

  • David Charles Bell

    • School of Engineering and Applied Sciences, Harvard University
    • Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University
    • Harvard University

  • Joseph G Checkelsky

    • Department of Physics, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology MIT
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology MIT
    • Physics, MIT