Modulation-doped quantum-well wires: Elementary excitation spectra

F. A. Reboredo and C. R. Proetto
Phys. Rev. B 50, 15174 – Published 15 November 1994
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Abstract

The elementary excitation spectra of quasi-one-dimensional quantum wires is calculated and compared with inelastic light scattering experiments corresponding to recently fabricated modulation-doped quantum-well wires. Self-consistent (Hartree) potentials, wave functions, and subband structure are used as the starting point for the calculation of the collective and single-particle excitations of the system, within the random-phase-approximation. Excellent quantitative agreement is found between theory and experiment, lending strong support to the existence of a distribution of negatively charged centers close to the heterojunction interface.

  • Received 29 July 1994

DOI:https://doi.org/10.1103/PhysRevB.50.15174

©1994 American Physical Society

Authors & Affiliations

F. A. Reboredo and C. R. Proetto

  • Comisión Nacional de Energía Atómica, Centro Atómico Bariloche and Instituto Balseiro, 8400 Bariloche, Argentina

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Issue

Vol. 50, Iss. 20 — 15 November 1994

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