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VOLUME 61 | ISSUE 5 | PAGE 386
Effect of magnetization fluctuations on exciton trapping in Cd1-x MnxTe semimagnetic semiconductors
It is shown, in the particular case of Cd0 873Mn0127Te crystals, that the emission lineshape of trapped excitons (the M°X line) for semimagnetic semiconductors corresponds to emission of excitons trapped by both fluctuations of the crystal-field potential and fluctuations of the magnetization of the crystal. The magnetization fluctuations essentially determine the emission at =1.8 K. This emission component stems from the presence of local internal magnetic fields in these crystals at temperatures near the phase transition to a spin-glass state.© 1995 American Institute of Physics.




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