Temperature-dependent optical and transport conductivities in doped silicene

POSTER

Abstract

We examined the thermal transport properties of silicene, germanene and other buckled honeycomb lattices with finite electron doping. Both Boltzmann and optical conductivities are computed based on the finite-temperature polarization function, Such thermally convoluted polarizability is calculated using temperature-dependent chemical potentials. We have analyzed the frequency dependence of both real and imaginary parts of the optical conductivity. Specific features of the obtained spectral dependence can be used for analyzing plasmon damping in silicene and ultrafast light modulations. We also calculated transport conductivities for various doping concentrations and band gaps using the second-order Born
approximation and derived several important analytical expressions for the inverse relaxation times.

*D.H. would like to acknowledge the support from the Air Force Office of Scientific Research (AFOSR). D.H is also
supported by the DoD Lab-University Collaborative Initiative (LUCI) program. G.G. would like to acknowledge the
support from the Air Force Research Laboratory (AFRL) through Grant #12530960.

Presenters

  • Andrii Iurov

    • Center for High Technology Materials, University of New Mexico
    • Physics, University of New Mexico
    • University of New Mexico
    • Center for High Technology Materials, University of New Mexico, Albuquerque, NM
    • Center for High Technology, University of New Mexico

Authors

  • Andrii Iurov

    • Center for High Technology Materials, University of New Mexico
    • Physics, University of New Mexico
    • University of New Mexico
    • Center for High Technology Materials, University of New Mexico, Albuquerque, NM
    • Center for High Technology, University of New Mexico

  • Godfrey Gumbs

    • Hunter College of the City University of New York, Department of Physics and Astronomy
    • Hunter college
    • Department of Physics & Astronomy, Hunter College of CUNY, New York, NY, USA
    • Hunter College, City University of New York, New York, NY
    • Physics and Astronomy, Hunter College/CUNY
    • Department of Physics and Astronomy, Hunter College of the City University of New York
    • Hunter College, CUNY
    • Physics Department, Hunter College/CUNY

  • Danhong Huang

    • Air Force Research Lab - Kirtland
    • Physics, University of New Mexico
    • Air Force Research Labs.
    • Kirtland Airforce Base, Air Force Research Laboratory, Albuquerque, NM
    • Advanced E/O Space Sensors Group, Air Force Research Laboratory
    • US Air Force Research Laboratory
    • Space Vehicles Directorate, Kirtland AFB, Air Force Research Laboratory