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arXiv · 0903.0072

Magneto-optical readout of dark exciton distribution in cuprous oxide

D. Fishman·C. Faugeras·M. Potemski·A. Revcolevschi·P. H. M. van Loosdrecht
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Abstract

An experimental study of the yellow exciton series in Cu2O in strong magnetic fields up to 32 T shows the optical activation of direct and phonon-assisted paraexciton luminescence due to mixing with the quadruple allowed orthoexciton state. The observed phonon-assisted luminescence yields information on the statistical distribution of occupied states. Additional time-resolved experiments provide a unique opportunity to directly determine the time evolution of the thermodynamical properties of the paraexciton gas. Because the lifetime of paraexciton is hardly affected by the optical activation in a strong magnetic field, this opens new possibilities for studies aiming at Bose-Einstein condensation of excitons in bulk semiconductors.

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D. Fishman, C. Faugeras, M. Potemski, A. Revcolevschi, P. H. M. van Loosdrecht. 2009-02-28. Magneto-optical readout of dark exciton distribution in cuprous oxide. https://arxiv.org/abs/0903.0072

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