Magneto-optical readout of dark exciton distribution in cuprous oxide

Autor:	Fishman, D., Faugeras, C., Potemski, M., Revcolevschi, A., van Loosdrecht, P. H. M.
Rok vydání:	2009
Předmět:	Condensed Matter - Other Condensed Matter Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
Popis:	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. Comment: 14 pages, 6 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0903.0072 Zobrazit plný text záznamu View this record from Arxiv