Observation of a programmable superlattice memory effect in monolayer TaIrTe<sub>4</sub>

ORAL

Abstract

Recently, the long-range superlattice has attracted great interest due to its potential to induce new topological and correlated phenomena, as observed in moiré materials. Achieving superlattice memory - a bistable control of the superlattice - offers a novel approach for encoding and manipulating a range of exotic quantum states for information storage and processing. In this talk, I will present our recent discovery of a surprising “superlattice memory” effect, observed through nonlinear transport in the intrinsic monolayer crystal TaIrTe4, unique for its topological bands and van Hove singularities.

*This research was supported by the Center for Advancement of Topological Semimetals, an Energy Frontier Research Center funded by the U.S. Department of Energy Office of Science, Office of Basic Energy Sciences, through the Ames Laboratory under Contract No. DE-AC02-07CH11358 and the Air Force Office of Scientific Research grant FA9550-22-1-0270 and FA9550-24-1-0117.

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Publication: Tang, J., Ding, T.S., Chen, H. et al. Dual quantum spin Hall insulator by density-tuned correlations in TaIrTe4. Nature 628, 515–521 (2024).

Presenters

  • Jian Tang

    • Boston College

Authors

  • Jian Tang

    • Boston College

  • Siyuan Ding

    • Boston College

  • Vsevolod Belosevich

    • Boston College

  • Jiangxu Li

    • University of Tennessee

  • Changjiang Yi

    • Max Planck Institute for Chemical Physics of Solids

  • Tiema Qian

    • University of California, Los Angeles

  • Shuhan Ding

    • Massachusetts Institute of Technology

  • Nikolai Peshcherenko

    • Max-Planck-Institute for Chemical Physics of Solids
    • Max Planck Institute for Chemical Physics of Solids

  • Kenji Watanabe

    • National Institute for Materials Science
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science
    • Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Research Center for Functional Materials, National Institute of Material Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Takashi Taniguchi

    • National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • International Center for Materials Nanoarchitectonics, National Institute of Material Science, Tsukuba, Japan
    • Advanced Materials Laboratory, National Institute for Materials Science

  • Kenneth Stephen Burch

    • Boston College

  • Claudia Felser

    • Max Planck Institute for Chemical Physics of Solids

  • Yao Wang

    • Clemson University
    • Emory University

  • Ni Ni

    • University of California, Los Angeles

  • Yang Zhang

    • University of Tennessee

  • Su-Yang Xu

    • Harvard University

  • Qiong Ma

    • Boston College