Magnetotransport of twisted bilayer transition metal dichalcogenides

ORAL

Abstract

Two-dimensional van der Waals material has become an exciting field. One of the reason is that this system provides multiple degrees of freedom, including stacking order, interlayer spacing and interlayer twisted angle, to engineer the material band structure. Manipulate these degrees of freedom has led to observation of several emergent phenomena, including the fractal quantum Hall effect, tunable Mott insulators, and unconventional superconductivity. In particular, interlayer interaction in van der Waals heterostructures at a different twisted angle could induce many exotic phenomena. How the interlayer interaction affect the electronic structure of a material is a fundamental question. In this study, we report magnetotransport of twisted bilayer transition-metal dichalcogenides (TMDs) and demonstrate how its band structure vary with twisted angle. These results broaden the application range of van der Waals heterostructure for future electronic devices.

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Presenters

  • En-Min Shih

    Columbia University, Physics, Columbia University

Authors

  • En-Min Shih

    Columbia University, Physics, Columbia University

  • Lei Wang

    Cornell University, Physics, Cornell University, Columbia University

  • Augusto Ghiotto

    Columbia University, Physics, Columbia University

  • Daniel A Rhodes

    Columbia University, Physics, Columbia University, National High Magnetic Field Laboratory, Tallahassee, FL-32310, USA., Columbia Nano Initiative, Columbia University, Department of Mechanical Engineering, Columbia University, New York, NY 10027 USA, Mechanical Engineering, Columbia University, Columbia Univ

  • Cheng Tan

    Columbia University, Physics, Columbia University

  • Abhay Pasupathy

    Columbia University, Physics, Columbia University, Department of Physics, Columbia University in the City of New York, Physics Department, Columbia University, Department of Physics, Columbia University

  • James Hone

    Columbia University, Mechanics, Columbia University, Department of Mechanical Engineering, Columbia University in the City of New York, Department of Mechanical Engineering, Columbia University, Department of Mechanical Engineering, Columbia University, New York, NY 10027 USA, Mechanical Engineering, Columbia University