Electron wave-function spillover in self-assembled InAsInP quantum wires

J. Maes, M. Hayne, Y. Sidor, B. Partoens, F. M. Peeters, Y. González, L. González, D. Fuster, J. M. García, and V. V. Moshchalkov
Phys. Rev. B 70, 155311 – Published 15 October 2004; Erratum Phys. Rev. B 76, 199902 (2007)

Abstract

Charge confinement in InAsInP self-assembled quantum wires is studied experimentally using photoluminescence in pulsed magnetic fields and theoretically using adiabatic theory within the effective-mass approximation, taking into account the strain in the samples. We show both experimentally and theoretically that, in spite of the large conduction band offset, the electron wave function is significantly spilled out of the wire in the wire height direction for thin wires. Furthermore, for a wire thickness of up to 8 monolayers, the electron spillover is inversely related to the wire height. These effects are due to the large zero point energy of the electron. As the wire becomes thicker, the decrease in confinement energy is reflected in a reduction of the electron wave-function extent.

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  • Received 4 December 2003

DOI:https://doi.org/10.1103/PhysRevB.70.155311

©2004 American Physical Society

Erratum

Erratum: Electron wave-function spillover in self-assembled InAsInP quantum wires [Phys. Rev. B 70, 155311 (2004)]

J. Maes, M. Hayne, Y. Sidor, B. Partoens, F. M. Peeters, Y. González, L. González, D. Fuster, J. M. García, and V. V. Moshchalkov
Phys. Rev. B 76, 199902 (2007)

Authors & Affiliations

J. Maes* and M. Hayne

  • Pulsed Field Group, Laboratory of Solid State Physics and Magnetism, K.U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium

Y. Sidor, B. Partoens, and F. M. Peeters

  • Departement Natuurkunde, Universiteit Antwerpen (Campus Drie Eiken), Universiteitsplein 1, B-2610 Antwerpen, Belgium

Y. González, L. González, D. Fuster, and J. M. García

  • Instituto de Microelectrónica de Madrid (CNM-CSIC), C/Isaac Newton 8, 28760 Tres Cantos, Madrid, Spain

V. V. Moshchalkov

  • Pulsed Field Group, Laboratory of Solid State Physics and Magnetism, K.U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium

  • *Electronic mail: Jochen.maes@fys.kuleuven.ac.be

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Issue

Vol. 70, Iss. 15 — 15 October 2004

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