Theoretical model for negative giant magnetoresistance in ultra-high-mobility 2D electron systems
arXiv:1406.5092 · doi:10.1209/0295-5075/106/47005
Abstract
We report on theoretical studies of the recently discovered negative giant magnetoresistance in ultraclean two-dimensional electron systems at low temperatures. We adapt a transport model to a ultraclean scenario and calculate the elastic scattering rate (electron-charged impurity) in a regime where the Landau level width is much smaller than the cyclotron energy. We obtain that for low magnetic fields the scattering rate and, as a consequence, the longitudinal magnetoresistance dramatically drop because of the small density of states between Landau levels. We also study the dependence of this striking effect on temperature and an in-plane magnetic field.
5pages, 5 figures
References in corpus (12)
- 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
- Giant microwave photoresistivity in a high-mobility quantum Hall system
- Degenerate states of narrow semiconductor rings in the presence of spin orbit coupling: Role of time-reversal and large gauge transformations
- Polarization immunity of magnetoresistivity response under Microwave excitation
- Microwave photoresistance of a high-mobility two-dimensional electron gas in a triangular antidot lattice
- Effect of frequency and temperature on microwave-induced magnetoresistance oscillations in two-dimensional electron systems
- Magnetoresistivity Modulated Response in Bichromatic Microwave Irradiated Two Dimensional Electron Systems
- Driving Weiss oscillations to Zero Resistance States by Microwave Radiation
- Hall magnetoresistivity response under Microwave excitation revisited
- Hysteretic behavior in weakly coupled double-dot transport in the spin blockade regime