New Resistance Maxima in the Fractional Quantum Hall Effect Regime

S. Kronmüller, W. Dietsche, J. Weis, K. von Klitzing, W. Wegscheider, and M. Bichler
Phys. Rev. Lett. 81, 2526 – Published 21 September 1998
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Abstract

The magnetoresistance of a narrow single quantum well is spectacularly different from the usual behavior. At filling factors 23 and 35 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 3. 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.

  • Received 24 April 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.2526

©1998 American Physical Society

Authors & Affiliations

S. Kronmüller, W. Dietsche, J. Weis, and K. von Klitzing

  • Max-Planck-Institut für Festkörperforschung, Stuttgart, Germany

W. Wegscheider and M. Bichler

  • Walter Schottky Institut, Technische Universität München, München, Germany

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Vol. 81, Iss. 12 — 21 September 1998

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