Optical spectroscopy of a two-dimensional electron gas near the metal-insulator transition

Journal Article (Journal Article)

We report on optical measurements of a two-dimensional electron gas near the metal-insulator transition. We observe the appearance of excitons and negatively charged excitons, X-, at the onset of the transition. The fact that these excitons appear at a relatively large average electron density shows that transition is induced by localization of single electrons in the electrostatic potential fluctuations of the remote ionized donors. © 1995 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Finkelstein, G; Shtrikman, H; Bar-Joseph, I

Published Date

  • January 1, 1995

Published In

Volume / Issue

  • 74 / 6

Start / End Page

  • 976 - 979

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.74.976

Citation Source

  • Scopus