A New Class of Magnetoresistance Oscillations: Interaction of a Two-Dimensional Electron Gas with Leaky Interface Phonons

Abstract

We report on a new class of magnetoresistance oscillations observed in a high-mobility two-dimensional electron gas (2DEG) in GaAs-Al${}_x$Ga${}_{1-x}$As heterostructures. Appearing in a weak magnetic field ($B<$ 0.3 T) and only in a narrow temperature range (2 K $<T<$ 9 K), these oscillations are periodic in 1/B with a frequency proportional to the electron Fermi wave vector, $k_F$. We interpret the effect as a magnetophonon resonance of the 2DEG with leaky interface-acoustic phonon modes carrying a wave vector $q=2k_F$. Calculations show a few branches of such modes on the GaAs-Al${}_x$Ga${}_{1-x}$As interface, and their velocities are in quantitative agreement with the data.

4 pages, RevTex4, 4 figures

Cited by in corpus (57)

• Nonequilibrium phenomena in high Landau levels
• Zener Tunneling Between Landau Orbits in a High-Mobility Two-Dimensional Electron Gas
• Magnetotransport in a two-dimensional electron system in dc electric fields
• Magnetoresistance in a High Mobility Two-Dimensional Electron Gas
• Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields
• Giant negative magnetoresistance in high-mobility 2D electron systems
• Temperature Dependence of Microwave Photoresistance in 2D Electron Systems
• Magnetoresistance Oscillations in Two-dimensional Electron Systems Induced by AC and DC Fields
• Colossal negative magnetoresistance in a 2D electron gas
• Giant microwave photoresistivity in a high-mobility quantum Hall system
• Microwave Photoconductivity in Two-Dimensional Electron Systems due to Photon-Assisted Interaction of Electrons with Leaky Interface Phonons
• Resonance oscillations of magnetoresistance in double quantum wells
• Role of electron-electron interactions in nonlinear transport in 2D electron systems
• Non-linear magnetotransport in microwave-illuminated two-dimensional electron systems
• Non-linear Magnetoresistance Oscillations in Intensely Irradiated Two-Dimensional Electron Systems Induced by Multi-Photon Processes
• Evidence for effective mass reduction in GaAs/AlGaAs quantum wells
• Microwave Photoresistance in dc-driven 2D Systems at Cyclotron Resonance Subharmonics
• Zero differential resistance in two-dimensional electron systems at large filling factors
• Hall field-induced resistance oscillations in tilted magnetic fields
• Mobility and quantum mobility of modern GaAs/AlGaAs heterostructures
• Multiphoton microwave photoresistance in a high-mobility two-dimensional electron gas
• Effect of electron-electron scattering on magnetointersubband resistance oscillations of two-dimensional electrons in GaAs quantum wells
• Theory of the microwave-induced photocurrent and photovoltage magnetooscillations in a spatially non-uniform 2D electron gas
• Strong magnetophonon oscillations in extra-large graphene
• Low temperature electron-phonon resonance in dc-current-biased two-dimensional electron systems
• Interference of magnetointersubband and phonon-induced resistance oscillations in single GaAs quantum wells with two populated subbands
• Linear magnetotransport in monolayer MoS${}_2$
• Microwave-induced resistance oscillations in tilted magnetic fields
• Microwave photoresistance in a two-dimensional electron gas with separated Landau levels
• Oscillatory Magneto-Thermopower and Resonant Phonon Drag in a High-Mobility 2D Electron Gas
• Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance
• Phonon-induced resistance oscillations of two-dimensional electron systems drifting with supersonic velocities
• Crossover from weak localization to Shubnikov-de Haas oscillations in a high mobility 2D electron gas
• Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: manifestation of spin-orbit band splitting
• Magnetophonon spectroscopy of Dirac Fermion scattering by transverse and longitudinal acoustic phonons in graphene
• High order fractional microwave induced resistance oscillations in 2D systems
• Phase of phonon-induced resistance oscillations in a high-mobility two-dimensional electron gas
• Microwave-induced magnetoresistance of two-dimensional electrons interacting with acoustic phonons
• Hall field-induced resistance oscillations in MgZnO/ZnO heterostructures
• Temperature Dependence of Magnetophonon Resistance Oscillations in GaAs/AlAs Heterostructures at High Filling Factors
• Non-linear Transport Phenomena and Current-induced Hydrodynamics in Ultra-high Mobility Two-dimensional Electron Gas
• Demonstration of high sensitivity of microwave-induced resistance oscillations to circular polarization
• Microwave Photoresistance in an Ultrahigh Quality GaAs Quantum Well
• Nonlinear magnetotransport in a dc-current-biased graphene
• Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state
• Nonlinear response in overlapping and separated Landau levels of GaAs quantum wells
• Excess electron screening of remote donors and mobility in modern GaAs/AlGaAs herostructures
• Observation of High Harmonics of the Cyclotron Resonance in Microwave Transmission of a High-Mobility Two-Dimensional Electron System
• Nonlinear transport in 2D electron gas exhibiting colossal negative magnetoresistance
• Hall field-induced resistance oscillations in a tunable-density GaAs quantum well
• Graphene's non-equilibrium fermions reveal Doppler-shifted magnetophonon resonances accompanied by Mach supersonic and Landau velocity effects
• Effect of Berry Phase on Nonlinear Response of Two-dimensional Fermions
• Resistance oscillations of two-dimensional electrons in crossed electric and tilted magnetic fields
• Probing confined interfacial excitations in buried layers by Brillouin light scattering
• Magnetophonon oscillations of thermoelectric power and combined resonance in two-subband electron systems
• Hall field-induced magneto-oscillations near charge neutrality point in graphene
• Oscillatory photoresistance on the high field side of the cyclotron resonance