Spectroscopy of few-electron quantom dots

D. Heitmann*, V. Gudmundsson, L. Rolf, C. Schüller, C. Steinebach, E. Ulrichs

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Pages (from-to)545-557
Number of pages13
JournalActa Physica Polonica A
Issue number5
Publication statusPublished - Nov 1999
EventProceedings of the 1999 28th International School of Physics of Semiconducting Compounds - Jaszowiec, Poland
Duration: 6 Jun 199911 Jun 1999


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