Bichromatic microwave-induced oscillatory differential-resistance in the high mobility GaAs/AlGaAs heterostructure system

ORAL

Abstract

Microwave photo-excitation of the high mobility GaAs/AlGaAs samples has revealed interesting light-matter coupling properties, and many studies have been carried out to study the associated microwave-induced oscillatory magneto-resistance [1,2]. Here, we report on the oscillatory differential resistance that seems to follow the low-frequency monochromatic response at lower magnetic fields and high-frequency monochromatic response at higher magnetic fields [3]. The higher sensitivity in the differential resistivity served to examine the dependency of this oscillatory behavior where the difference of monochromatic and bichromatic results indicates a beats like relation with the magnetic field. This beat like behavior was further studied at different frequency ratios over the 40 < f < 102 GHz band while changing the microwave power systematically. The results of the study are reported here.
[1] R. G. Mani et al., Nature, 420, 646 (2002)
[2] Tianyu Ye, et.al, Phys. Rev. B 89, 155307 (2014).
[3] B. Gunawardana, et.al., Phys. Rev. B. 95, 195304 (2017).

*U.S. Department of Energy, Grant No. DE-SC0001762
Army Research Office under W911NF-14-2-0076 and W911NF-15-1-0433

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Presenters

  • Binuka Gunawardana

    • Physics & Astronomy , Georgia State University
    • Georgia State Univ
    • Physics and Astronomy , Georgia State University
    • Department of Physics, Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University

Authors

  • Binuka Gunawardana

    • Physics & Astronomy , Georgia State University
    • Georgia State Univ
    • Physics and Astronomy , Georgia State University
    • Department of Physics, Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University

  • Chathuranga Munasinghe

    • Physics and Astronomy , Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University

  • R.L. Samaraweera

    • Physics and Astronomy , Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University
    • Dept. of Physics and Astronomy, Georgia State Univ

  • T. R. Nanayakkara

    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University

  • Annika Kriisa

    • Physics & Astronomy , Georgia State University
    • Physics & Astronomy, Georgia State University
    • Georgia State Univ
    • Physics and Astronomy , Georgia State University
    • Department of Physics, Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University
    • Dept. of Physics and Astronomy, Georgia State Univ

  • U. Kushan Wijewardena

    • Physics & Astronomy , Georgia State University
    • Physics & Astronomy, Georgia State University
    • Physics and Astronomy , Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University

  • Christian Reichl

    • ETH - Zurich
    • Solid State Physics Laboratory, ETH Zurich
    • ETH Zurich
    • Physics, ETH Zurich
    • Department of Physics, ETH Zurich
    • Laboratory for Solid State Physics, ETH Zürich
    • Laboratorium fur Festkorperphysik, , ETH-Zurich
    • Laboratorium für Festkörperphysik, ETH Zürich

  • Werner Wegscheider

    • ETH - Zurich
    • Solid State Physics Laboratory, ETH Zurich
    • ETH Zurich
    • Physics, ETH Zurich
    • Department of Physics, ETH Zurich
    • Laboratory for Solid State Physics, ETH Zürich
    • Laboratorium fur Festkrperphysik, ETH-Zurich
    • Laboratorium fur Festkorperphysik, , ETH-Zurich
    • ETH Zürich
    • Laboratorium für Festkörperphysik, ETH Zürich
    • Laboratorium fur Festkorperphysik, ETH-Zurich

  • Ramesh Mani

    • Physics & Astronomy , Georgia State University
    • Physics & Astronomy, Georgia State University
    • Georgia State Univ
    • Physics and Astronomy , Georgia State University
    • Department of Physics, Georgia State University
    • Physics and Astronomy, Georgia State University, 25 Park Place, #605, Georgia State University
    • Dept. of Physics and Astronomy, Georgia State Univ
    • Georgia State University