Abstract
Magnetotransport in a ballistic wire under the conditions of integer and fractional quantization was studied experimentally. A nonlinear magnetic-field dependence of filling factor (ν) of the Landau level was observed; this dependence arises if the self-consistent electrostatic potential of the wire has a specific form. It is assumed that the observed effect results from the influence of interaction between electrons at the partially occupied Landau level on this potential, which brings about a decrease in the electron concentration in the wire as the magnetic field increases in the case of ν<1.
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Z. D. Kvon, E. B. Olshanetsky, M. Casse, et al., Physica B (Amsterdam) 298, 155 (2001).
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Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 36, No. 8, 2002, pp. 986–988.
Original Russian Text Copyright © 2002 by Kvon, Olshanetsky, Plotnikov, Toropov, Portal.
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Kvon, Z.D., Olshanetsky, E.B., Plotnikov, A.E. et al. Anomalies of the fractional quantum hall effect in a wide ballistic wire. Semiconductors 36, 921–923 (2002). https://doi.org/10.1134/1.1500472
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DOI: https://doi.org/10.1134/1.1500472