Siddiki, A. and Horas, J. and Moser, J. and Wegscheider, W. and Ludwig, S. (2009) Interaction-mediated asymmetries of the quantized Hall effect. EPL, 88 (1): 17007. ISSN 0295-5075,
Full text not available from this repository. (Request a copy)Abstract
Experimental and theoretical investigations on the integer quantized Hall effect in gate-defined narrow Hall bars are presented. At low electron mobility the classical (high-temperature) Hall resistance line R(H)(B) cuts through the center of all Hall plateaus. In contrast, for our high-mobility samples the intersection point, at evenfilling factors nu = 2, 4,..., is clearly shifted towards larger magnetic fields B. This asymmetry is in good agreement with predictions of the screening theory, i.e. taking Coulomb interaction into account. The observed effect is directly related to the formation of incompressible strips in the Hall bar. The spin-split plateau at nu = 1 is found to be almost symmetric regardless of the mobility. We explain this within the so-called effective g-model. Copyright (C) EPLA, 2009
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EDGE CHANNELS; SYSTEMS; CONDUCTANCE; REGIME; |
| 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: | 04 Sep 2020 04:34 |
| Last Modified: | 04 Sep 2020 04:34 |
| URI: | https://pred.uni-regensburg.de/id/eprint/28320 |
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