Quantum inelastic collisions between paraexcitons in Cu2O

Abstract : A density-dependent loss of optically inactive paraexcitons is measured as a function of temperature over a wide range of densities in Cu2O. At low temperatures, the two-body inelastic collision rate stays at a constant and the extracted collision cross-section diverges. A loss channel cannot be explained classically but is expected in a quantum-mechanical regime. We discuss the repercussion of this loss on the feasibility of achieving Bose-Einstein condensation of paraexcitons in Cu2O.
keyword : excitons
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Journal articles
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https://hal-polytechnique.archives-ouvertes.fr/hal-00506491
Contributor : Aurélien Houard <>
Submitted on : Tuesday, July 27, 2010 - 11:29:36 PM
Last modification on : Wednesday, July 3, 2019 - 10:48:02 AM

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K. Yoshioka, Takuro Ideguchi, André Mysyrowicz, Makoto Kuwata-Gonokami. Quantum inelastic collisions between paraexcitons in Cu2O. Physical Review A, American Physical Society, 2010, 82 (4), pp.041201(R). ⟨10.1103/PhysRevB.82.041201⟩. ⟨hal-00506491⟩

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