Volume 178, Issue 1 pp. 33-38
Original Paper

Two-Dimensional Excitons in Large Magnetic Field Gradients

F. Pulizzi

F. Pulizzi

Research Institute for Materials, High Field Magnet Laboratory, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

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P.C.M. Christianen

P.C.M. Christianen

Research Institute for Materials, High Field Magnet Laboratory, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

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J.C. Maan

J.C. Maan

Research Institute for Materials, High Field Magnet Laboratory, University of Nijmegen, Toernooiveld 1, NL-6525 ED Nijmegen, The Netherlands

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T. Wojtowicz

T. Wojtowicz

Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland

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G. Karczewski

G. Karczewski

Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland

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J. Kossut

J. Kossut

Institute of Physics, Polish Academy of Sciences, PL-02668 Warsaw, Poland

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Abstract

Inhomogeneous magnetic fields are used to exert a magnetic force on two-dimensional excitons. The large field gradients are produced by positioning a thin magnetized stripe of dysprosium on top of a semi-magnetic CdMnTe/CdMgTe quantum well. By measuring the photoluminescence energy and intensity, spatially resolved with μm resolution, the actual value of the local magnetic force, which can be as high as 0.4 meV/μm, and its effect on the exciton motion are determined.

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