Huge Longitudinal Resistance in the Fractional Quantum Hall Effect Regime

Details Huge Longitudinal Resistance in the Fractional Quantum Hall Effect Regime Huge Longitudinal Resistance in the Fractional Quantum Hall Effect Regime

1998-04-27

arxiv.org/abs/cond-mat/9804283v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 pictures

Scientific paper

The magneto resistance of a narrow single quantum well is spectacularly different from the usual behavior. At filling factors 2/3 and 3/5 we observe large and sharp maxima in the longitudinal resistance instead of the expected minima. The peak value of the resistance exceeds those of the surrounding magnetic field regions by a factor of up to three. The formation of the maxima takes place on very large time scales which suggests a close relation with nuclear spins. We discuss the properties of the observed maxima due to a formation of domains of different electronic states.

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