Anomalous magnetic susceptibility and Hall effect from valley degrees of freedom

ORAL

Abstract

With a staggered sublattice potential, sizable gaps can occur in epitaxial graphenen films. Magnetic and transport properties of this system are studied. We predict large signal of magnetic susceptibility and relate it to the intrinsic large magnetic moments of electrons. There is also an anomalous contribution to the ordinary Hall effect, which is due to the valley dependent Berry phase.

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Authors

  • Tianyi Cai

    • The university of Texas at Austin

  • Wang Yao

    • The university of Texas at Austin

  • Junren Shi

    • Chinese Academy of Science

  • Qian Niu

    • The university of Texas at Austin
    • The University of Texas at Austin
    • UT Austin Dept of Physics
    • Department of Physics, The University of Texas, Austin, Texas
    • University of Texas at Austin