Colossal negative magnetoresistance in a 2D electron gas

Abstract

We report on a colossal negative magnetoresistance (MR) in GaAs/AlGaAs quantum well which, at low temperatures, is manifested by a drop of the resistivity by more than an order of magnitude at a magnetic field $B\approx 1$ kG. In contrast to MR effects discussed earlier, the MR reported here is not parabolic, even at small $B$, and persists to much higher in-plane magnetic fields and temperatures. Remarkably, the temperature dependence of the resistivity at $B\approx 1$ kG is linear over the entire temperature range studied (from 1 to 30 K) and appears to coincide with the high-temperature limit of the zero-field resistivity, hinting on the important role of acoustic phonons.

References in corpus (20)

• Nonequilibrium phenomena in high Landau levels
• Zener Tunneling Between Landau Orbits in a High-Mobility Two-Dimensional Electron Gas
• Limit to 2D mobility in modulation-doped GaAs quantum structures: How to achieve a mobility of 100 millions
• Quasiclassical negative magnetoresistance of a 2D electron gas: interplay of strong scatterers and smooth disorder
• Interaction-induced magnetoresistance in a two-dimensional electron gas
• Magnetoresistance in a High Mobility Two-Dimensional Electron Gas
• A New Class of Magnetoresistance Oscillations: Interaction of a Two-Dimensional Electron Gas with Leaky Interface Phonons
• Observation of a cyclotron harmonic spike in microwave-induced resistances in ultraclean GaAs/AlGaAs quantum wells
• Resonant Phonon Scattering in Quantum Hall Systems Driven by dc Electric Fields
• Interaction-induced magnetoresistance: From the diffusive to the ballistic regime
• Giant negative magnetoresistance in high-mobility 2D electron systems
• Quasiclassical magnetotransport in a random array of antidots
• Magnetoresistance of a 2D electron gas caused by electron interactions in the transition from the diffusive to the ballistic regime
• Giant microwave photoresistivity in a high-mobility quantum Hall system
• Classical mechanism for negative magnetoresistance in two dimensions
• Anomalous Low-Field Classical Magnetoresistance in Two Dimensions
• Shubnikov-de Haas oscillations in GaAs quantum wells in tilted magnetic fields
• Phonon-induced resistance oscillations of two-dimensional electron systems drifting with supersonic velocities
• Non-Markovian Effects on the Two-Dimensional Magnetotransport: Low-field Anomaly in Magnetoresistance
• Phase of phonon-induced resistance oscillations in a high-mobility two-dimensional electron gas

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