Nonlinear transport in two-dimensional electron gas exhibiting colossal negative magnetoresistance

Q. Shi, M. A. Zudov, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report on nonlinear transport measurements in a GaAs/AlGaAs quantum well exhibiting a colossal negative magnetoresistance effect. Under applied dc bias, the magnetoresistance becomes nonmonotonic, exhibiting distinct extrema that move to higher magnetic fields with increasing current. In the range of magnetic fields corresponding to the resistivity minimum at zero bias, the resistivity increases linearly with current and the rate of this increase scales with the inverse magnetic field. The latter observation is consistent with the theory, proposed more than 35 years ago, considering classical memory effects in the presence of strong, dilute scatterers.

Original languageEnglish (US)
Article number201301
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number20
DOIs
StatePublished - Nov 3 2014

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