Fortin, Emery,Benson, Eric.2009-03-232009-03-2319991999Source: Dissertation Abstracts International, Volume: 61-04, Section: B, page: 2000.9780612480889http://hdl.handle.net/10393/8595http://dx.doi.org/10.20381/ruor-7389Experimental results concerning ballistic excitonic transport in high quality cuprite single crystals are presented and discussed. The onset conditions of this anomalous transport, in the form of a packet propagating at near sound velocity, is compatible with theoretical predictions for Bose-Einstein condensation of n = 1 paraexcitons. Experiments involving the interaction between two packets reveal coherence properties, in agreement with an interpretation assuming an exciton Bose-Einstein condensate as the origin of the packet. The amplification of the packet by thermal excitons and the creation of a stationary condensate in the form of a filament are discussed in terms of radiationless exciton scattering induced by the condensate.141 p.Physics, Condensed Matter.Thesis