Exciton Binding Energy in GaAs V-Shaped Quantum Wires

R. Rinaldi; R. Cingolani; M. Lepore; M. Ferrara; I. M. Catalano; F. Rossi; L. Rota; E. Molinari; P. Lugli; U. Marti; D. Martin; F. Morier-Gemoud; P. Ruterana; F. K. Reinhart

doi:10.1103/PhysRevLett.73.2899

Exciton Binding Energy in GaAs V-Shaped Quantum Wires

R. Rinaldi, R. Cingolani, M. Lepore, M. Ferrara, I. M. Catalano, F. Rossi, L. Rota, E. Molinari, P. Lugli, U. Marti, D. Martin, F. Morier-Gemoud, P. Ruterana, and F. K. Reinhart

Phys. Rev. Lett. 73, 2899 – Published 21 November 1994

Abstract

We have determined the main parameters of the quasi-one-dimensional excitons confined in GaAs V-shaped quantum wires, namely exciton Bohr radius and binding energy, by two-photon absorption and magnetoluminescence experiments. The experimental results are in excellent agreement with our calculations, based on realistic wave functions for the actual wire geometry.

Received 20 May 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.2899

Authors & Affiliations

R. Rinaldi^* and R. Cingolani

Dipartimento di Scienza dei Materiali, Universitá di Lecce, I-73100 Lecce, Italy

M. Lepore, M. Ferrara, and I. M. Catalano

Dipartimento di Fisica, Universitá di Bari, I-70100 Bari, Italy

F. Rossi^†, L. Rota^‡, and E. Molinari

Dipartimento di Fisica, Universitá di Modena, I-41100 Modena, Italy

P. Lugli

Dipartimento di Ingegneria Elettronica, Universitá Roma II, I-00173 Roma, Italy

U. Marti, D. Martin, F. Morier-Gemoud, P. Ruterana, and F. K. Reinhart

Ecole Politechnique Fédérale de Lausanne, PHB Ecublens, CH-1015 Lausanne, Switzerland

^*On leave from Dipartimento di Fisica, Universitá di Bari I-70100 Bari, Italy.
^†Present address: Fachbereich Physik, Phillips Universität Marburg, Renthof 5, D-35032 Marburg, Germany.
^‡Present address: Department of Physics, Clarendon Laboratory, Oxford OX1 3PU, England.