1990•Physical review. B, Condensed matterRequires access

Edge magnetoplasmons in the fractional-quantum-Hall-effect regime

M. Wassermeier, J. Oshinowo, J. P. Kotthaus, A. H. MacDonald, C. T. Foxon, J. J. Harris

Abstract

We report the observation of resonant edge excitations of a high-mobility two-dimensional electron system in the regime of the fractional quantum Hall effect. Narrow edge resonances are observed only on fractional or integer Hall plateaus and have a resonance frequency proportional to the quantized Hall conductivity. We interpret our results using a new theory of edge magnetoplasmons in the quantum Hall regime.

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Key concepts: Quantum Hall effect, Fractional quantum Hall effect, Physics, Quantum spin Hall effect, Condensed matter physics, Composite fermion, Enhanced Data Rates for GSM Evolution, Electron