Spectroscopy of quantum dots and antidots

D. Heitmann, K. Kern, T. Demel, P. Grambow, K. Ploog, Y. H. Zhang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The remarkable progress of submicron technology has made it possible to realize man-made low-dimensional electronic systems. Starting from two-dimensional electronic systems (2DES) in semiconductor heterostructures the electrons are further confined by lateral potentials acting on a submicron scale. This induces quantum confined energy states such that, for wires, a set of one-dimensional subbands with free dispersion in only one direction is formed or, for dots, artificial "atoms" with a totally discrete energy spectrum are obtained. A reversed structure with respect to quantum dots are "antidots" where geometrical holes are "punched" into an originally 2DES. These low-dimensional systems exhibit unique properties. In this review we would like to discuss some recent results on far-infrared excitations in quantum dots and antidots.

Original languageEnglish (US)
Pages (from-to)245-252
Number of pages8
JournalSurface Science
Volume267
Issue number1-3
DOIs
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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