Localization-Delocalization Transition of Indirect Excitons in Lateral Electrostatic Lattices
arXiv:0901.1349 · doi:10.1103/PhysRevLett.102.186803
Abstract
We study transport of indirect excitons in GaAs/AlGaAs coupled quantum wells in linear lattices created by laterally modulated gate voltage. The localization-delocalization transition (LDT) 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 amplitude. These results are consistent with the model, which attributes the LDT to the interaction-induced percolation of the exciton gas through the external potential. We also discuss applications of the lattice potentials for estimating the strength of disorder and exciton interaction.
4 pages, 4 figures
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Cited by in corpus (49)
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- Spin transport of indirect excitons
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- Coherent transport of atomic wave packets in amplitude-modulated vertical optical lattices
- Two-Dimensional Electrostatic Lattices for Indirect Excitons
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- Dynamics of indirect exciton transport by moving acoustic fields
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- Exciton effective mass enhancement in coupled quantum wells in electric and magnetic fields
- Voltage-controlled long-range propagation of indirect excitons in van der Waals heterostructure
- Ballistic spin transport in exciton gases
- Pattern Formation in the Exciton Inner Ring
- Quantum Signature Blurred by Disorder in Indirect Exciton Gases
- Theory of condensation of indirect excitons in a trap
- Collective interlayer pairing and pair superfluidity in vertically stacked layers of dipolar excitons
- Fluctuation and Commensurability Effect of Exciton Density Wave
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- Plasmonic photonic crystal mirror for long-lived interlayer exciton generation
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- Complexity of dipolar exciton Mott transition in GaN/(AlGa)N nanostructures
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- Electron-hole superfluidity controlled by a periodic potential
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- Observations of indirect exciton trapping in one- and two-dimensional magnetic lattices
- Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells
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- Short note on the excitonic Mott phase
- Dipolar excitons offer a rich playground for both design of novel optoelectronic devices and fundamental many-body physics
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