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

Source: [From spatially indirect to momentum-space indirect exciton by in-plane magnetic field](<https://www.sota2.com/research/paper/68fa24d32c2a3760193a96ae>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T09:34:09.845Z

Authors: L. V. Butov, A. V. Mintsev, Yu.E. Lozovik, K. L. Campman, A. C. Gossard

Published: 1999-12-14T11:58:19.000Z

## 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.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/9912242>)

[PDF](<https://arxiv.org/pdf/cond-mat/9912242.pdf>)