Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state

Details Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state Magnetoplasmon resonance in 2D electron system driven into a zero-resistance state

2012-03-21

arxiv.org/abs/1203.4781v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 2 figures; to appear in Phys. Rev. B - Rapid Communications

Scientific paper

We report on a remarkably strong, and a rather sharp, photoresistance peak originating from a dimensional magnetoplasmon resonance (MPR) in a high mobility GaAs/AlGaAs quantum well driven by microwave radiation into a zero-resistance state (ZRS). The analysis of the MPR signalreveals a negative background providing experimental evidence for the concept of absolute negative resistance associated with the ZRS. When a system is further subject to a dc field, the maxima of microwave-induced resistance oscillations decay away and a system reveals a state with close-to-zero differential resistance. The MPR peak, on the other hand, remains essentially unchanged, indicating surprisingly robust Ohmic behavior under the MPR conditions.

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