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Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
We study transport of indirect excitons in $\mathrm{GaAs}/\mathrm{AlGaAs}$ coupled quantum wells in linear lattices created by laterally modulated gate voltage. The localization-delocalization transition for transport across the lattice was observed with reducing lattice amplitude or increasing exciton density. The exciton interaction energy at the transition is close to the lattice …