Thermal plasmon Frequency for tunable extrinsic Dirac structures

ORAL

Abstract

Analytic expressions have been obtained for the chemical potential of a variety of extrinsic (doped) gapped Dirac materials. We also created a reliable piecewise-linear model for the density-of-states in molybdenum disulfide, which demonstrates good agreement with previously obtained numerical results. A decrease of chemical potential with increasing temperature due to enhanced thermal populations of an upper subband in silicene was also shown. In MoS$_2$, the chemical potential is found to cross a zero-energy point at sufficiently high temperatures because of the broken symmetry with respect to electron and hole states.

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Presenters

  • Godfrey Gumbs

    Physics and Astronomy, Hunter college, Hunter college, CUNY, Physics and astronomy, Hunter College-City University of New York, Physics and Astronomy, Hunter College, CUNY, Department of Physics & Astronomy, Hunter College of CUNY, Hunter College, CUNY, Department of Physics and Astronomy, Hunter College of the City University of New York, Department of Physics and Astronomy, Hunter College, City University of New York

Authors

  • Godfrey Gumbs

    Physics and Astronomy, Hunter college, Hunter college, CUNY, Physics and astronomy, Hunter College-City University of New York, Physics and Astronomy, Hunter College, CUNY, Department of Physics & Astronomy, Hunter College of CUNY, Hunter College, CUNY, Department of Physics and Astronomy, Hunter College of the City University of New York, Department of Physics and Astronomy, Hunter College, City University of New York

  • Andrii Iurov

    Center for High Technology Materials, University of New Mexico

  • Danhong Huang

    US Air Force Research Lab (AFRL/RVSWS), Space Vehicles Directorate, Air Force Research Lab, Space Vehicles Directorate, US Air Force Research Lab, US Air Force Research Laboratory

  • Ganesh Balakrishnan

    Center for High Technology Materials, University of New Mexico