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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.

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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