Excitonic coupling in GaAs/GaAlAs quantum wells in an electric field

23 February 1987

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 58 (8) , 832-835
https://doi.org/10.1103/physrevlett.58.832

Abstract

We have observed coupling between excited and ground states of excitons in GaAs quantum wells under an electric field. Low-temperature photoluminescence excitation spectra show peaks corresponding to excited states of the heavy-hole exciton and to the ground state of the light-hole exciton. With increasing field, the peaks converge and then they show anticrossing and share their oscillator strengths. As a result of this interaction, fine structure attributed to the 2p state of the heavy-hole exciton is resolved.

Keywords

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