Phys. Rev. Lett. 81, 2526–2529 (1998)New Resistance Maxima in the Fractional Quantum Hall Effect RegimeReceived 24 April 1998; published in the issue dated 21 September 1998 The magnetoresistance 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 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. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.2526
DOI:
10.1103/PhysRevLett.81.2526
PACS:
73.40.Hm, 73.20.Dx
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