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From Quantum Hall Ferromagnetism to Huge Longitudinal Resistance at the 2/3 Fractional Quantum Hall State

DOI to cite this document:
10.5283/epub.11318
Kraus, Stefan ; Stern, O. ; Lok, J. G. S. ; Dietsche, W. ; Klitzing, Klaus von ; Bichler, Max ; Schuh, Dieter ; Wegscheider, Werner
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Date of publication of this fulltext: 07 Dec 2009 13:25


Abstract

We observe the transition from a spin-unpolarized to a polarized ν=2/3 fractional quantum Hall state at low currents (<5  nA), recently described in terms of quantum Hall ferromagnetism, versus density and parallel magnetic field. At larger currents the time and current dependent huge longitudinal resistance (HLR) is always initiated at the transition. Transport in the HLR regime is linear and ...

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