Abstract

New semiconductor compound Cd 1−xMn xTe exhibits strong Faraday rotation in the interband region. It is shown by measurements of magneto-optical Kerr effect and reflection in magnetic field that unusually large exciton Zeeman splitting plays an essential role in the observed Faraday rotation. A possible explanation of the observed splitting (corresponding to a “ g factor” value up to 100) by exchange interaction of excitons with manganese d states is suggested.

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