Study of Orthoexciton-to-Paraexciton Conversion in Cu2O by Excitonic Lyman Spectroscopy - École polytechnique Access content directly
Journal Articles Physical Review Letters Year : 2005

Study of Orthoexciton-to-Paraexciton Conversion in Cu2O by Excitonic Lyman Spectroscopy

Abstract

Using time-resolved 1s-2p excitonic Lyman spectroscopy, we study the orthoexciton-to-paraexciton transfer, following the creation of a high density population of ultracold 1s orthoexcitons by resonant two-photon excitation with femtosecond pulses. An observed fast exciton-density dependent conversion rate is attributed to spin exchange between pairs of orthoexcitons. Implication of these results on the feasibility of Bose-Einstein condensation of paraexcitons in Cu2O is discussed.

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hal-00463616 , version 1 (13-03-2010)

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M. Kubouchi, K. Yoshioka, Ryo Shimano, André Mysyrowicz, M. Kuwata-Gonokami. Study of Orthoexciton-to-Paraexciton Conversion in Cu2O by Excitonic Lyman Spectroscopy. Physical Review Letters, 2005, 94 (1), pp.016403. ⟨10.1103/PhysRevLett.94.016403⟩. ⟨hal-00463616⟩
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