Abstract
The spatial distribution of the density of indirect excitons is studied in double quantum well in the case when condensed and gas phases coexist. The both the nucleation (Lifshits-Slyozov-Wagner) theory and spinodal decomposition (Chan-Hillert) theory are applied generating them on a system of unstable particles. Comparison with experiments is presented. The creation of structures in non-homogeneous external fields is investigated. The periodical distribution density, which arises in quantum well under a slot in conductive electrode, is analyzed in detail. The transformation of the structures with changing of a pumping and a width of the slot.
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