By S. A. Moskalenko, D. W. Snoke
Bose-Einstein condensation of excitons is a different impact during which the digital states of a pretty good can self-organize to procure quantum section coherence. The phenomenon is heavily associated with Bose-Einstein condensation in different platforms reminiscent of liquid helium and laser-cooled atomic gases. protecting theoretical features in addition to contemporary experimental paintings, the ebook presents a finished survey of the sector. After introducing the correct simple physics of excitons, the authors talk about exciton-phonon interactions in addition to the habit of biexcitons. in addition they conceal exciton phase-transitions and provides specific consciousness to nonlinear optical results together with the optical Stark impact and chaos in excitonic platforms. The thermodynamics of equilibrium, quasiequilibrium, and nonequilibrium structures are tested intimately. all through, the authors interweave theoretical and experimental effects. The publication might be of significant curiosity to graduate scholars and researchers in semiconductor and superconductor physics, quantum optics, and atomic physics.
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Additional info for Bose-Einstein Condensation of Excitons and Biexcitons: And Coherent Nonlinear Optics with Excitons
32). " In the years since Bose condensation of exitons was first proposed [44,45], it has often been a byword that Bose condensation of excitons is impossible, for some reason. Present theory and experiment show that to be false. There is still much work to be done, however, and many questions remain unanswered. References               C. Kittel, Introduction to Solid State Physics, 7th ed. (Wiley, New York, 1996). K. Ridley, Quantum Processes in Semiconductors (Oxford U.
12 (as well as the spectra in the original observations of a Bose-Einstein distribution of excitons in CU2O ) are always broader than a Maxwell-Boltzmann distribution at lattice temperature, which remains near the He bath temperature. This is most likely because a density-dependent heating effect exists in CU2O, called Auger recombination [35-37], in which two excitons collide and one recombines, giving its ground-state energy (approximately the bandgap energy) to ionizing the other exciton.
11. Comparison of orthoexciton and paraexciton luminescence from CU2O at the same time and place during intense laser excitation. The Bose-Einstein fits to two curves have the same temperature, but different chemical potential (and FWHM), reflecting the different levels of occupation of the two species (from Ref. 32). The three spin states of the orthoexciton triplet can be split by stress. 12 shows orthoexciton phonon-assisted luminescence at high density. In this case, there are three interpenetrating gas species, each with a different chemical potential but the same temperature .
Bose-Einstein Condensation of Excitons and Biexcitons: And Coherent Nonlinear Optics with Excitons by S. A. Moskalenko, D. W. Snoke