Quantum Hall Effect and insulating behavior induced by magnetic field in ZrTe<sub>5</sub>

ORAL

Abstract

The discovery of Dirac Materials (DM) and Topological Insulator (TI) provided a fascinating field in exploring the quantum dynamics of relativistic field theory in condensed matter systems. With a strong magnetic field, the state of DM could convert into other exotic phases like as Weyl fermions, Charge Density Wave, Spin Density Wave, Axion insulator, and excitonic insulator. In this work, we report the experimental observation of a quantum Hall effect in 3D Zirconium Penta-Telluride（ZrTe5）within a small magnetic field B (<1.3T) regime. As further increasing magnetic field, the system has reached the quantum limit regime, beyond its lowest Landau Level. The magneto-resistance ρxx increases dramatically and display insulator behavior above certain critical magnetic field Bc. We suggest this metal-insulator transition (MIT) is more like relevant to the many-body interactions.

*Grant support from Innovation program of Guangdong Province (No:608225320279) and Shenzhen Peacock Program(No:KQTD2016022619565991).

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Presenters

  • Fangdong Tang

    • Physics, South University of Science and Technology of China

Authors

  • Fangdong Tang

    • Physics, South University of Science and Technology of China

  • Yafei Ren

    • Physics, Univ of Sci & Tech of China
    • Univ of Sci & Tech of China

  • Ruidan Zhong

    • Brookhaven National Laboratory
    • Brookhaven National Labs
    • Brookhaven Natl Lab
    • Brookhaven National Lab
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory

  • Genda Gu

    • Brookhaven National Laboratory
    • Brookhaven National Labs
    • Condensed Matter Physics and Materials Science Division, Brookhaven National Laboratory
    • Condensed Matter Physics and Material Science Department, Brookhaven National Laboratory
    • Condensed Matter &materials Science, Brookhaven Natl Lab
    • Brookhaven Natl Lab
    • Condensed Matter Physics and Materials Science, Brookhaven National Laboratory
    • Brookhaven Natl. Lab
    • Brookhaven National Lab
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • brookhaven national laboratory

  • Zhenhua Qiao

    • Physics, Univ of Sci & Tech of China
    • Univ of Sci & Tech of China

  • Liyuan Zhang

    • Physics, South University of Science and Technology of China