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Pauli paramagnetism and Landau level crossing in a modulation doped CdMnTe/CdMgTe quantum well
F J Teran1, M Potemski, D K Maude
1Grenoble High Magnetic Field Laboratory, Max Planck Institut für Festkörperforschung and Centre National de la Recherche Scientifique, BP 166, 38042 Grenoble Cedex 9, France.
Physical Review Letters
|May 15, 2002
Abstract:
Electrical transport measurements are reported on a 2DEG in a CdMnTe quantum well structure. The amplitude of the Shubnikov-de Haas oscillations show a distinct beating pattern with nodes corresponding to coincidences between the spin splitting and a half integer multiple of the cyclotron energy. The observed pattern of nodes is a direct consequence of the large Pauli paramagnetism induced by the s-d exchange interaction between the spins of electronic states and the localized magnetic moments.