Spectroscopy of Few-Electron Quantum Dots

• Authors: D. Heitmann , V. Gudmundsson , L. Rolf , C. Schüller , C. Steinebach , E. Ulrichs
• Languages of publication: EN

Abstracts

EN

Advances in submicron technology make it possible to realize man-made low-dimensional electronic systems with quantum confined energy states. Superimposing lateral potential onto two-dimensional electron systems for example in AlGaAs-GaAs systems allows one to prepare quantum wires and dots. We will discuss modulation-doped systems. Then, with typical confinement energies in the meV regime, far-infrared and resonant Raman spectroscopy give direct access to the quantum confined energy levels of the systems. One is now approaching the limit to prepare quantum dots with well defined small numbers of electrons per dot, N = 1, 2, 3... It becomes thus possible to perform a kind of "atomic" spectroscopy in these systems.

Keywords

EN

72.15.Rn; 73.20.Dx; 73.20.Mf; 78.30.Fs

Discipline

• 73.20.Mf: Collective excitations (including excitons, polarons, plasmons and other charge-density excitations)(for collective excitations in quantum Hall effects, see 73.43.Lp)
• 72.15.Rn: Localization effects (Anderson or weak localization)
• 78.30.Fs: III-V and II-VI semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 96
• Issue: 5
• Pages: 545-557

Dates

published

1999-11

Contributors

author

D. Heitmann

• Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

author

V. Gudmundsson

• Science Institute, University of Iceland, Dunhaga 3, 107 Reykjavik, Iceland

author

L. Rolf

• Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

author

C. Schüller

• Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

author

C. Steinebach

• Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

author

E. Ulrichs

• Institut für Angewandte Physik und Zentrum für Mikrostrukturforschung, Universität Hamburg, Jungiusstraße 11, 20355 Hamburg, Germany

Identifiers

DOI

10.12693/APhysPolA.96.545