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Superlattice quantum solid of dipolar excitons

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arxiv 2401.04639 v2 pith:WGA25DXC submitted 2024-01-09 cond-mat.quant-gas

Camille Lagoin , Kirk Baldwin , Loren Pfeiffer , Francois Dubin This is my paper · ORCID
classification cond-mat.quant-gas
keywords excitonsdipolarlatticequantumsolidsuperlatticeregimeacross
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We study dipolar excitons confined at 330 mK in a square electrostatic lattice of a GaAs double quantum well. In the dipolar occupation blockade regime, at 3/2 filling, we evidence that excitons form a face-centred superlattice quantum solid. This phase is realised with high purity across 36 lattice sites, in a regime where the excitons mean interaction energy exceeds the depth of the lattice confinement. The superlattice solid then closely relates to Wigner crystals.

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