Novel phenomena in dilute electron systems in two dimensions

  1. M. P. Sarachik†,‡ and
  2. S. V. Kravchenko§
  1. ‡Physics Department, City College of the City University of New York, New York, NY 10031; and §Physics Department, Northeastern University, Boston, MA 02115

Abstract

For the past two decades, all two-dimensional systems of electrons were believed to be insulating in the limit of zero temperature. Recent experiments provide evidence for an unexpected transition to a conducting phase at very low electron densities. The nature of this phase is not understood and is currently the focus of intense theoretical and experimental attention.

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  • ↵ † To whom reprint requests should be addressed.

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  1. PNAS May 25, 1999 vol. 96 no. 11 5900-5902
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