Kekule Moiré Heterostructure

ORAL

Abstract



With the growing interest in moiré heterostructures, we propose a new moiré system consisting of transition metal dichalcogenide (TMD) layering with vdW magnets where the lattice constants of the two are differed by much. However, we find that a sqrt(3)xsqrt(3) supercell of TMD is nearly commensurate with many vdW magnets. By using ab initio methods, we show that the electronic structure of the heterostructure varies significantly with the local atomic registry and the magnetic order. We further construct a physically motivated model to describe the moiré potential and moiré bands in this system. Lastly, we demonstrate how our predicted phenomena can be experimentally measured.

*We acknowledge the support from UW Molecular Engineering Materials Center, a NSF Materials Research Science and Engineering Center (Grant No. DMR1719797)

Presenters

  • Yusen Ye

    • University of Washington, Seattle

Authors

  • Yusen Ye

    • University of Washington, Seattle
  • Chong Wang

    • University of Washington
    • Carnegie Mellon University
  • Xiaowei Zhang

    • University of Washington
  • Jimin Qian

    • University of Washington
  • Di Xiao

    • University of Washington
    • 1. Department of Materials Science & Engineering, University of Washington, Seattle WA 98915 2. Department of Physics, University of Washington, Seattle WA 98915
    • Department of Materials Science & Engineering, Department of Physics, University of Washington; Pacific Northwest National Laboratory
  • Ting Cao

    • University of Washington
    • Department of Materials Science & Engineering, University of Washington