Defect effects on Electron Magneto-Transport in Quantum Wells

ORAL

Abstract

The point-defect effects on the electron magneto-transport in a multiple quantum-well system are investigated by employing a many-body theory. By working within the ladder approximation, our theory takes into account the local-field vertex correction to a bare polarization function of electrons. Moreover, both intralayer and interlayer screening to defect-electron interactions are included within the random-phase approximation. Furthermore, by studying defect charging dynamics, both capture and relaxation times of a point defect, as well as captured density of electrons, are computed as functions of temperature, electron density and different types of point defects. Finally, numerically calculated defect effects on energy-relaxation and momentum-relaxation times of are presented and analyzed for various defect and electron densities and different temperatures as well.

*DH would like to acknowledge the financial supports from the Air Force Office of Scientific Research (AFOSR) and the Laboratory University Collaboration Initiative (LUCI) program.

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Presenters

  • Danhong Huang

    • Air Force Research Lab
    • Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM
    • Kirtland Air Force Research Lab
    • Space Vehicles Directorate, Air Force Research Lab - Kirtland
    • Air Force Research Laboratory
    • Air Force Research Laboratory, Kirtland Airforce Base, Albuquerque, NM

Authors

  • Danhong Huang

    • Air Force Research Lab
    • Air Force Research Laboratory, Kirtland Air Force Base, Albuquerque, NM
    • Kirtland Air Force Research Lab
    • Space Vehicles Directorate, Air Force Research Lab - Kirtland
    • Air Force Research Laboratory
    • Air Force Research Laboratory, Kirtland Airforce Base, Albuquerque, NM

  • Andrii Iurov

    • Medgar Evers College
    • Medgar Evers College of City University of New York
    • Medgar Evers college
    • Department of Physics and Computer Science, Medgar Evers College of City University of New York
    • Physics and Astronomy, Medgar Evers College, City University of New York
    • Medgar Evers College of the City University of New York
    • Department of Physics, Medgar Evers College of City University of New York

  • Fei Gao

    • Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor

  • Godfrey Gumbs

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