Coulomb-Induced Suppression of Band-Edge Singularities in the Optical Spectra of Realistic Quantum-Wire Structures

Fausto Rossi and Elisa Molinari
Phys. Rev. Lett. 76, 3642 – Published 6 May 1996
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Abstract

The linear and nonlinear optical properties of realistic quantum wires are studied through a theoretical approach based on a set of generalized semiconductor Bloch equations. Our scheme allows a full three-dimensional multisubband description of electron-hole correlation for any confinement profile, thus permitting a direct comparison with experiments for available quantum-wire structures. Our results show that electron-hole Coulomb correlation removes the one-dimensional band-edge singularities from the absorption spectra, whose shape is heavily modified with respect to the ideal free-carrier single-subband case over the whole density range.

  • Received 23 October 1995

DOI:https://doi.org/10.1103/PhysRevLett.76.3642

©1996 American Physical Society

Authors & Affiliations

Fausto Rossi1,2 and Elisa Molinari2

  • 1Istituto Nazionale Fisica della Materia (INFM), and Dipartimento di Fisica, Università di Modena, I-41100 Modena, Italy
  • 2Fachbereich Physik, Philipps-Universität, D-35032 Marburg, Germany

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Vol. 76, Iss. 19 — 6 May 1996

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