Theoretical study of quantum transport in two dimensional MoS2

ORAL

Abstract

In this work, we calculate the quantum correction to the conductivity for disordered electrons in a two-dimensional transition metal dichalcogenide and show that it exhibits crossover from the symplectic to orthogonal universality classes. Due to the strong spin-orbit coupling, this system displays weak anti-localization behaviour in a strong magnetic field, while symmetry breaking introduces a crossover parameter, causing weak localization in a weak magnetic field. Temperature and carrier density dependence of coherence length and crossover parameter are discussed making comparisons with available experimental data.

*This work is supported by the Singapore National Research Foundation NRF-NRFF2012-01.

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Authors

  • Indra Yudhistira

    • Department of Physics, National University of Singapore and Centre for Advanced 2D Materials and Graphene Research Centre
    • Center for Advanced 2D materials and Graphene Research Center, and Department of Physics, National University of Singapore

  • Hennrik Schmidt

    • Department of Physics, National University of Singapore and Centre for Advanced 2D Materials and Graphene Research Centre

  • Leiqiang Chu

    • Department of Physics, National University of Singapore and Centre for Advanced 2D Materials and Graphene Research Centre

  • Goki Eda

    • Department of Physics and Department of Chemistry, National University of Singapore and Centre for Advanced 2D Materials and Graphene Research Centre

  • Shaffique Adam

    • Yale-NUS College, Singapore, Centre for Advanced 2D Materials and Graphene Research Centre, and Department of Physics, National University of Singapore
    • Yale NUS College and National University of Singapore
    • National University of Singapore
    • Yale-NUS college, Graphene Research Centre and Department of Physics, National University of Singapore
    • Yale-NUS College, Center for Advanced 2D materials and Graphene Research Center, and Department of Physics, National University of Singapore
    • Yale-NUS College and National University of Singapore