Coulomb Correlation and Band Gap Renormalization at High Carrier Densities in Quantum Wires

R. Ambigapathy, I. Bar-Joseph, D. Y. Oberli, S. Haacke, M. J. Brasil, F. Reinhardt, E. Kapon, and B. Deveaud
Phys. Rev. Lett. 78, 3579 – Published 5 May 1997
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Abstract

We have studied the luminescence of narrow quantum wires at photoexcitation densities of up to 3×106cm1. We show that even at these densities, which are well above the expected Mott density of 8×105cm1, excitonic recombination dominates over other recombination channels in stark contrast with the behavior of quantum wells and bulk structures at equivalent densities. As we observe no significant shift in the peak energy with density, an upper limit to the band gap renormalization can be set.

  • Received 23 December 1996

DOI:https://doi.org/10.1103/PhysRevLett.78.3579

©1997 American Physical Society

Authors & Affiliations

R. Ambigapathy, I. Bar-Joseph, D. Y. Oberli, S. Haacke, M. J. Brasil, F. Reinhardt, E. Kapon, and B. Deveaud

  • Institute of Micro and Optoelectronics, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland

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Vol. 78, Iss. 18 — 5 May 1997

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