title: Novel phenomena in dilute electron systems in two dimensions.
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.
authors.affiliation: Physics Department, City College of the City University of New York, New York, NY 10031, USA.
authors.forename: M P
authors.initials: MP
authors.lastname: Sarachik
authors.forename: S V
authors.initials: SV
authors.lastname: Kravchenko