Collective electronic excitation in a trapped ensemble of photogenerated dipolar excitons and free holes revealed by inelastic light scattering

URN to cite this document:: urn:nbn:de:bvb:355-epub-386889
DOI to cite this document:: 10.5283/epub.38688

Dietl, Sebastian ; Wang, Sheng

; Schuh, Dieter ; Wegscheider, Werner ; Kotthaus, Jörg P. ; Pinczuk, Aron ; Holleitner, Alexander W. ; Wurstbauer, Ursula

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Date of publication of this fulltext: 20 Mar 2019 12:48

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Abstract

Photogenerated excitonic ensembles confined in coupled GaAs quantum wells were probed by a complementary approach of emission spectroscopy and resonant inelastic light scattering. Lateral electrostatic trap geometries were used to create dense systems of spatially indirect excitons and excess holes with similar densities in the order of 10(11) cm(-2.) Inelastic light scattering spectra reveal a ...