Bright-to-dark exciton transition in symmetric coupled quantum wells induced by an in-plane magnetic field

Kai Chang and F. M. Peeters
Phys. Rev. B 63, 153307 – Published 28 March 2001
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Abstract

The energy dispersion of an exciton in a coupled quantum well is modified by an external in-plane magnetic field. We find that the in-plane magnetic field can shift the ground state of the magnetoexciton from a zero in-plane center-of-mass (CM) momentum to a finite CM momentum, and render the ground state of the magnetoexciton stable against radiative recombination due to momentum conservation. At the same time, a spatial separation of the electron and hole is realized. Thus an in-plane magnetic field can be used to tailor the radiative properties of excitons in coupled quantum wells.

  • Received 15 November 2000

DOI:https://doi.org/10.1103/PhysRevB.63.153307

©2001 American Physical Society

Authors & Affiliations

Kai Chang and F. M. Peeters*

  • Departement Natuurkunde, Universiteit Antwerpen (UIA), Universiteitsplein 1, B-2610 Antwerpen, Belgium

  • *Electronic address: Francois.peeters@ua.ac.be.

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Vol. 63, Iss. 15 — 15 April 2001

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