Thermal Smearing of the Magneto-Kohn Anomaly for Dirac materials and comparison with the Two-dimensional electron Liquid

ORAL

Abstract

We compute and compare the effects due to a uniform perpendicular magnetic field and the temperature on the static polarization functions for monolayer graphene (MLG) associated with the Dirac point with that for the two-dimensional electron liquid (2DEL). Previous results for the 2DEL are discussed and we point out a flaw in reported analytic derivation to exhibit the smearing of the Fermi surface for 2DEL. The relevance of our study to the Kohn anomaly in low-dimensional structures and the Friedel oscillations for the screening of the potential for a dilute distribution of impurities is reported.

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Authors

  • Dipendra Dahal

    • Department of Physics and Astronomy, Hunter College, CUNY, New York, NY 10065
    • Graduate Center and Hunter College of City University of New York, 695 Park Avenue, New York, NY 10065, USA
    • Department of Physics and Astronomy, Graduate Center and Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065

  • Antonios Balassis

    • Department of Physics, Fordham University, NY, USA

  • Godfrey Gumbs

    • Hunter College of the City University of New York, NY
    • Department of Physics and Astronomy, Hunter College, CUNY, New York, NY 10065
    • Hunter College of City University of New York, 695 Park Avenue, New York, NY 10065, USA
    • Department of Physics and Astronomy, Hunter College of the City University of New York, 695 Park Avenue, New York, NY 10065
    • Hunter College of the City University of New York

  • M. L. Glasser

    • Department of Physics, Clarkson University, Potsdam, New York 13699-5820, USA