Comment on "Formation Mechanism and Low-Temperature Instability of Exciton Rings"
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❄️ cond-mat.mes-hall
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commentexcitonformationmodelafterwardsalgaasapplicabilitybeen
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This is an extended version of the Comment that contains the criticism against an applicability of the diffusive transport model for the explanation of the ring-shaped spatial pattern formation in the exciton photoluminescence for the GaAs/AlGaAs double quantum wells [Phys. Rev. Lett. 92, 117404 (2004)]. The model has been used in other similar papers published in the PRL and the PRB afterwards.
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