From spatially indirect to momentum-space indirect exciton by in-plane magnetic field

Abstract

In-plane magnetic field is found to change drastically the photoluminescence spectra and kinetics of interwell excitons in GaAs/AlGaAs coupled quantum wells. The effect is due to the in-plane magnetic field induced displacement of the interwell exciton dispersion in a momentum space, which results in the transition from the momentum-space direct exciton ground state to the momentum-space indirect exciton ground state. In-plane magnetic field is, therefore, an effective tool for the exciton dispersion engineering.

4 pages, 3 figures

References in corpus (2)

• Exciton condensate in semiconductor quantum well structures.
• Formation of k-space indirect magnetoexcitons in double-quantum-well direct gap heterostructures

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• Roton-maxon spectrum and instability for weakly interacting dipolar excitons in a semiconductor layer
• Compensation of Dipolar-Exciton Spin Splitting in Magnetic Field
• Effect of in-plane magnetic field on the photoluminescence spectrum of modulation-doped quantum wells and heterojunctions
• Influence of magnetic quantum confined Stark effect on the spin lifetime of indirect excitons
• Anisotropic superfluidity of two-dimensional excitons in a periodic potential
• The Role of Spin-Flip Collisions in a Dark Exciton Condensate
• Condensation to a strongly correlated dark fluid of two dimensional dipolar excitons