Evidence for correlated states in a topological van der Waals monolayer.

ORAL

Abstract

Introducing electron correlations to topological materials can lead to the emergence of new quantum states of matter. We found that natural topological van der Waals (vdW) crystals MM′X4 (M = Nb, Ta and M′ = Ir, Rh) could be an exciting new platform to study the interplay of correlation and topology. In this talk, we report experimental evidence as well as tentative theoretical understanding of correlated states in a monolayer MM′X4.

* The work was primarily supported by the AFOSR grant FA9550-22-1-0270 and the Center for the Advancement of Topological Materials (CATS), an EFRC funded by DOE, through the Ames Laboratory under contract DEAC02-07CH11358.

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Presenters

  • Siyuan Ding

    Boston College

Authors

  • Siyuan Ding

    Boston College

  • Jian Tang

    Boston College

  • Hongyu Chen

    Nanyang Technological University

  • Kenji Watanabe

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

  • Takashi Taniguchi

    Kyoto Univ, National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, National Institute for Materials Sciences, NIMS, International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan, National Institute for Material Science, International Center for Materials Nanoarchitectonics, NIMS, Japan, International Center for Materials Nanoarchitectonics, Tsukuba, National Institue for Materials Science, Kyoto University, National Institute of Materials Science, International Center for Materials Nanoarchitectonics and National Institute for Materials Science

  • Ziqiang Wang

    Boston College

  • Liang Fu

    Massachusetts Institute of Technology MI, Massachusetts Institute of Technology, MIT

  • Yang Zhang

    University of Tennessee, Knoxville, University of Tennessee, IAMM HQ, University of Tennessee Knoxville

  • Xiaofeng Qian

    Texas A&M University

  • Kenneth S Burch

    Boston College

  • Youguo Shi

    Chinese Academy of Sciences, Institute of Physics, Chinese Academy of Sciences, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

  • Ni Ni

    University of California, Los Angeles

  • Guoqing Chang

    Nanyang Technological University

  • Suyang Xu

    Harvard University

  • Qiong Ma

    Boston College