Excited states of ring-shaped (InGa)As quantum dots in a GaAs(AlGa)As quantum well

F. Pulizzi, D. Walker, A. Patanè, L. Eaves, M. Henini, D. Granados, J. M. Garcia, V. V. Rudenkov, P. C. M. Christianen, J. C. Maan, P. Offermans, P. M. Koenraad, and G. Hill
Phys. Rev. B 72, 085309 – Published 2 August 2005; Erratum Phys. Rev. B 74, 239905 (2006)

Abstract

By studying the resonant tunneling of electrons through self-assembled ring-shaped (InGa)As quantum dots embedded in the quantum well of an (AlGa)AsGaAs(AlGa)As heterostructure, we find evidence for the existence of excited states of the quantum dots which exhibit a 2pz-like character along the growth direction z. The states are investigated by magnetotunneling spectroscopy with magnetic fields applied parallel and perpendicular to z.

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  • Received 11 March 2005

DOI:https://doi.org/10.1103/PhysRevB.72.085309

©2005 American Physical Society

Erratum

Erratum: Excited states of ring-shaped (InGa)As quantum dots in a GaAs(AlGa)As quantum well [Phys. Rev. B 72, 085309 (2005)]

F. Pulizzi, D. Walker, A. Patanè, L. Eaves, M. Henini, D. Granados, J. M. Garcia, V. V. Rudenkov, P. C. M. Christianen, J. C. Maan, P. Offermans, P. M. Koenraad, and G. Hill
Phys. Rev. B 74, 239905 (2006)

Authors & Affiliations

F. Pulizzi*, D. Walker, A. Patanè, L. Eaves, and M. Henini

  • School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom

D. Granados and J. M. Garcia

  • Instituto de Microelectrònica de Madrid, CNM, CSIC, Isaac Newton, 8, Tres Cantos, 28760 Madrid, Spain

V. V. Rudenkov, P. C. M. Christianen, and J. C. Maan

  • High Field Magnet Laboratory, Institute for Molecules and Materials, Radboud University Nijmegen, Toernooiveld 7, 6525 ED Nijmegen, The Netherlands

P. Offermans and P. M. Koenraad

  • Department of Semiconductor Physics, Eindhoven University of Technology, P.O. Box 513, NL-5600 MB Eindhoven, The Netherlands

G. Hill

  • Department of Electronic and Electrical Engineering, University of Sheffield, Sheffield S3 3JD, United Kingdom

  • *Present address: Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, United Kingdom. Electronic address: f.pulizzi@sheffield.ac.uk

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Issue

Vol. 72, Iss. 8 — 15 August 2005

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