Bloch-Grüneisen nonlinearity of electron transport in GaAs/AlGaAs heterostructures
arXiv:1708.09835 · doi:10.1103/PhysRevB.96.081407
Abstract
We report on nonlinear transport measurements in a two-dimensional electron gas hosted in GaAs/AlGaAs heterostructures. Upon application of direct current, the low-temperature differential resistivity acquires a positive correction, which exhibits a pronounced maximum followed by a plateau. With increasing temperature, the nonlinearity diminishes and disappears. These observations can be understood in terms of a crossover from the Bloch-Grüneisen regime to the quasielastic scattering regime as the electrons are heated by direct current. Calculations considering the interaction of electrons with acoustic phonons provide a reasonable description of our experimental findings.
arXiv comment4 pages, 4 figures
References in corpus (14)
- Controlling electron-phonon interactions in graphene at ultra high carrier densities
- Zener Tunneling Between Landau Orbits in a High-Mobility Two-Dimensional Electron Gas
- Magnetotransport in a two-dimensional electron system in dc electric fields
- Non-linear Resistivity of a Two-Dimensional Electron Gas in a Magnetic Field
- Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields
- Zero differential resistance state of two dimensional electron systems in strong magnetic fields
- Effect of DC electric field on longitudinal resistance of two dimensional electrons in a magnetic field
- Role of electron-electron interactions in nonlinear transport in 2D electron systems
- Current-induced magnetoresistance oscillations in two-dimensional electron systems
- Zero differential resistance in two-dimensional electron systems at large filling factors
- Hall field-induced resistance oscillations in tilted magnetic fields
- Hall field-induced resistance oscillations in Ge/SiGe quantum wells
- Hall field-induced resistance oscillations in MgZnO/ZnO heterostructures
- Nonlinear response in overlapping and separated Landau levels of GaAs quantum wells