Réseau bi-dimensional pour les excitons dipolaires
| Autor: | Loren Pfeiffer, François Dubin, Mathieu Bernard, Kenneth D. West, Camille Lagoin, Kirk Baldwin, Stéphan Suffit, Maxime Vabre |
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| Přispěvatelé: | Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Princeton University |
| Jazyk: | italština |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Photoluminescence Condensed matter physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter::Other Exciton FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences Periodic potential Delocalized electron Dipole Condensed Matter::Materials Science Lattice (order) Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Spectral width Double quantum [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B Physical Review B, American Physical Society, 2020, ⟨10.1103/PhysRevB.102.245428⟩ |
| ISSN: | 2469-9950 2469-9969 |
| Popis: | We report a two-dimensional artificial lattice for dipolar excitons confined in a GaAs double quantum well. Exploring the regime of large fillings per lattice site, we verify that the lattice depth competes with the magnitude of excitons repulsive dipolar interactions to control the degree of localisation in the lattice potential. Moreover, we show that dipolar excitons radiate a narrow-band photoluminescence, with a spectral width of a few hundreds of micro-eV at 340 mK, in both localised and delocalised regimes. This makes our device suitable for explorations of dipolar excitons quasi-condensation in a periodic potential. 5 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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