Multiple photoexcitation of two-dimensional electron systems: bichromatic magnetoresistance oscillations revisited

Abstract

We analyze theoretically magnetoresistance of high mobility two-dimensional electron systems being illuminated by multiple radiation sources. In particular, we study the influence on the striking effect of microwave-induced resistance oscillations. We consider moderate radiation intensities without reaching the zero resistance states regime. We use the model of radiation-driven Larmor orbits extended to several light sources. First, we study the case of two different radiations polarized in the same direction with different or equal frequencies. For both cases we find a regime of superposition or interference of harmonic motions. When the frequencies are different, we obtain a modulated magnetoresistance response with pulses and beats. On the other hand, when the frequencies are the same, we find that the final result will depend on the phase difference between both radiation fields going from an enhanced response to a total collapse of oscillations, reaching an outcome similar to darkness. Finally, we consider a multiple photoexcitation case (three different frquencies) where we propose the two-dimensional electron system as a potential nanoantenna device for microwaves.

5 pages, 2 figures

References in corpus (18)

• Theory of microwave-induced oscillations in the magnetoconductivity of a 2D electron gas
• Radiation-Induced "Zero-Resistance State" and the Photon Assisted Transport
• Radiation-induced oscillatory magnetoresistance as a sensitive probe of the zero-field spin splitting in high mobility GaAs/AlGaAs devices
• Novel Radiation-induced Magnetoresistance Oscillations in a Nondegenerate 2DES on Liquid Helium
• Nonlinear growth with the microwave intensity in radiation-induced magnetoresistance oscillations
• Bichromatic Microwave Photoresistance of Two-Dimensional Electron System
• Phase study of oscillatory resistances in microwave-irradiated- and dark- GaAs/AlGaAs devices: Indications of a new class of integral quantum Hall effect
• Microwave zero-resistance states in a bilayer electron system
• Polarization immunity of magnetoresistivity response under Microwave excitation
• Microwave photoresistance of a high-mobility two-dimensional electron gas in a triangular antidot lattice
• Effect of frequency and temperature on microwave-induced magnetoresistance oscillations in two-dimensional electron systems
• Photo-current and photo-voltage oscillations in the two-dimensional electron system: screening and "anti-screening" of a potential profile
• Magnetoresistivity Modulated Response in Bichromatic Microwave Irradiated Two Dimensional Electron Systems
• Driving Weiss oscillations to Zero Resistance States by Microwave Radiation
• Anharmonic behavior in Microwave-driven resistivity oscillations in Hall bars
• Hall magnetoresistivity response under Microwave excitation revisited
• Hysteretic behavior in weakly coupled double-dot transport in the spin blockade regime
• Photovoltaic Oscillations Due to Edge-Magnetoplasmon Modes in a Very-High Mobility 2D Electron Gas