Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2009-02-28
Physics
Condensed Matter
Other Condensed Matter
14 pages, 6 figures
Scientific paper
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.
Faugeras Clement
Fishman D.
Potemski Marek
Revcolevschi Alexandre
van Loosdrecht Paul H. M.
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