Polarized photoluminescence from bound magnetic polarons in (Cd,Mn) Se |
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| Authors: | D Heiman J Warnock PA Wolff R Kershaw D Ridgley K Dwight A Wold |
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| Institution: | Francis Bitter National Magnet Laboratory Massachusetts Institute of Technology Cambridge, Massachusetts 02139, USA;Department of Chemistry Brown University Providence, Rhode Island 02912, USA |
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| Abstract: | Luminescence from Cd1-xMnxSe, with x～10-1, shows strong circular polarization in the presence of a weak magnetic field. The polarization saturates at fields much smaller than does the magnetization. The carrier-Mn2+ exchange interaction is responsible for the field and temperature dependence of the polarization. At high temperatures, the polarization is similar to that inferred from band splittings; at lower temperatures, it is modified by bound magnetic polaron effects and a spin diffusion bottleneck. |
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