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Fractional quantum Hall effect in a dilute magnetic semiconductor

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Betthausen, Christian ; Giudici, Paula ; Iankilevitch, Alexei ; Preis, C. ; Kolkovsky, V. ; Wiater, M. ; Karczewski, G. ; Piot, B. A. ; Kunc, J. ; Potemski, M. ; Wojtowicz, Tomasz ; Weiss, Dieter
Date of publication of this fulltext: 10 Oct 2014 05:45


We report the observation of the fractional quantum Hall effect in the lowest Landau level of a two-dimensional electron system (2DES), residing in the diluted magnetic semiconductor Cd1−xMnxTe. The presence of magnetic impurities results in a giant Zeeman splitting leading to an unusual ordering of composite fermion Landau levels. In experiment, this results in an unconventional opening and ...


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