Low temperature electron-phonon resonance in dc-current-biased two-dimensional electron systems

Abstract

Effects of resonant acoustic phonon scattering on magnetoresistivity are examined in two-dimensional electron systems at low temperatures by using a balance-equation magnetotransport scheme direct controlled by the current. The experimentally observed resonances in linear resistivity are shown to result from the conventional bulk phonon modes in a GaAs-based system, without invoking leaky interface phonons. Due to quick heating of electrons, phonon resonances can be dramatically enhanced by a finite bias current. When the electron drift velocity increases to the speed of sound, additional and prominent phonon resonance peaks begin to emerge. As a result, remarkable resistance oscillation and negative differential resistivity can appear in nonlinear transport in a modest mobility sample at low temperatures, which is in agreement with recent experiments.

7 pages, 5 figures, published version

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Cited by in corpus (14)

• Nonequilibrium phenomena in high Landau levels
• Mechanisms of the microwave photoconductivity in 2D electron systems with mixed disorder
• Giant microwave photoresistivity in a high-mobility quantum Hall system
• Hall field-induced resistance oscillations in tilted magnetic fields
• Theory of the microwave-induced photocurrent and photovoltage magnetooscillations in a spatially non-uniform 2D electron gas
• Linear magnetotransport in monolayer MoS${}_2$
• Nonlinear theory of fractional microwave-induced magnetoresistance oscillations in a dc-driven two-dimensional electron system
• Microwave photoresistance in a two-dimensional electron gas with separated Landau levels
• Phonon-induced resistance oscillations of two-dimensional electron systems drifting with supersonic velocities
• Non-linear response of a high mobility two-dimensional electron system near the second harmonic of the cyclotron resonance
• Phase of phonon-induced resistance oscillations in a high-mobility two-dimensional electron gas
• Nonlinear magnetotransport in a dc-current-biased graphene
• Oscillatory nonlinear differential magnetoresistance of highly mobile 2D electrons in high Landau levels
• Magnetophonon oscillations of thermoelectric power and combined resonance in two-subband electron systems