On the possibility of realizing a periodic low-density spatial distribution of excitons |
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Authors: | V K Mukhomorov |
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Institution: | 1.Agrophysical Research Institute,St. Petersburg,Russia |
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Abstract: | The solutions of a system of coupled integro-differential Bogolyubov equations for distribution functions have been used to
determine conditions, both in temperature and in concentration, under which a spatially uniform distribution of excitons transforms
spontaneously into a periodic state with a small amplitude. The analysis rests on the concept assuming the existence of a
biexciton interaction potential. The criterion for the appearance of a weak periodic component in the exciton distribution
is derived from the condition of branching of solutions of Hammerstein-type equations at the point where the parameters of
this equation reach critical values. |
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Keywords: | |
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