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Review Article
Nature 379, 413 - 419 (01 February 1996); doi:10.1038/379413a0

Electrons in artificial atoms

R. C. Ashoori

Department of Physics, 13-2053, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Progress in semiconductor technology has enabled the fabrication of structures so small that they can contain just one mobile electron. By varying controllably the number of electrons in these 'artificial atoms' and measuring the energy required to add successive electrons, one can conduct atomic physics experiments in a regime that is inaccessible to experiments on real atoms.

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