Beating pattern in radiation-induced oscillatory magnetoresistance in 2DES: coupling of plasmon-like and acoustic phonon modes

Abstract

We present a microscopic theory on the observation of a beating pattern in the radiation-induced magnetoresistance oscillations at very low magnetic field. We con- sider that such a beating pattern develops as a result of the coupling between two oscillatory components: the first is a system of electron Landau states being harmon- ically driven by radiation. The second is a lattice oscillation, i.e., an acoustic phonon mode. We analyze the dependence of the beating pattern on temperature, radiation frequency and power. We conclude that the beating pattern is an evidence of the radiation-driven nature of the irradiated Landau states that makes them behave as a collective plasma oscillation at the radiation frequency. Thus, the frequency of such plasmons could be tuned from microwave to terahertz in the same nanodevice with an apparent technological application.

5 pages, 5 figures

References in corpus (16)

• Strong coupling between surface plasmon polaritons and emitters
• Radiation-induced oscillatory magnetoresistance as a sensitive probe of the zero-field spin splitting in high mobility GaAs/AlGaAs devices
• Nonlinear growth with the microwave intensity in radiation-induced magnetoresistance oscillations
• Observation of linear-polarization-sensitivity in the microwave-radiation-induced magnetoresistance oscillations
• 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
• Microwave-induced resistance oscillations as a classical memory effect
• Polarization immunity of magnetoresistivity response under Microwave excitation
• Effect of frequency and temperature on microwave-induced magnetoresistance oscillations in two-dimensional electron systems
• Driving Weiss oscillations to Zero Resistance States by Microwave Radiation
• Hall magnetoresistivity response under Microwave excitation revisited
• Anharmonic behavior in Microwave-driven resistivity oscillations in Hall bars
• Comparative study of microwave radiation-induced magnetoresistive oscillations induced by circularly- and linearly- polarized photo-excitation
• Crossover between distinct mechanisms of microwave photoresistance in bilayer systems
• Magneto-resistance oscillations induced by high-intensity terahertz radiation
• Linear polarization study of microwave-radiation-induced magnetoresistance oscillations: Comparison of power dependence to theory