Ising ferromagnetism and domain morphology in the fractional quantum Hall regime

Smet, J. H. and Deutschmann, R. A. and Wegscheider, Werner and Abstreiter, G. and von Klitzing, K. (2001) Ising ferromagnetism and domain morphology in the fractional quantum Hall regime. PHYSICAL REVIEW LETTERS, 86 (11). pp. 2412-2415. ISSN 0031-9007

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Abstract

The density driven quantum phase transition between the unpolarized and fully spin polarized v = 2/3 fractional quantum Hall state is accompanied by hysteresis in accord with 2D Ising ferromagnetism and domain formation. The temporal behavior is reminiscent of the Barkhausen and time-logarithmic magnetic after-effects ubiquitous in familiar ferromagnets. It too suggests domain morphology and, in conjunction with NMR, intricate domain dynamics, which is partly mediated by the contact hyperfine interaction with nuclear spins of the host semiconductor.

Item Type: Article
Uncontrolled Keywords: SPIN TRANSITION; POLARIZATION;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Depositing User: Dr. Gernot Deinzer
Date Deposited: 08 Feb 2022 16:34
Last Modified: 08 Feb 2022 16:34
URI: https://pred.uni-regensburg.de/id/eprint/41667

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