APS » PROLA » Phys. Rev. B » Volume 56 » Issue 16

Phys. Rev. B 56, R10056 - R10059 (1997)

Observation of two-dimensional exciton-phonon quasibound states

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N. T. Pelekanos, H. Haas, and N. Magnea
Département de Recherche Fondamentale sur la Matière Condensée, CEA Grenoble, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France

V. I. Belitsky and A. Cantarero
Department of Applied Physics, University of Valencia, 46100 Burjassot, Spain

Rapid Communication Received 24 July 1997

We demonstrate the existence of robust exciton-phonon quasibound states (EPQBS) in a two-dimensional semiconductor system, resulting from the binding of the e1h1 and e1h2 heavy-hole quantum-well excitons with an LO phonon. We show that increasing quantum confinement drastically weakens these two-dimensional EPQBS. A theoretical model including phonon confinement accounts qualitatively for our results.


©1997 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v56/pR10056
DOI: 10.1103/PhysRevB.56.R10056
PACS: 78.66.Hf, 71.38.+i

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