For about 20 years, it has been the prevailing view that there can be no metallic state or
metal-insulator transition in two dimensions in zero magnetic field. In the last several years …

An introductory survey of the theoretical ideas and calculations and the experimental results
which depart from Landau Fermi liquids is presented. The common themes and possible …

We present measurements of the Fermi surface and underlying band structure of a single
layer of indium on Si (111) with 7× 3 periodicity. Electrons from both indium valence …

The physics of semiconductors has seen an enormous evolution within the last? fty years.
Countless achievements have been made in scienti? c research and device applications …

A detailed investigation of the metallic behavior in high-quality GaAs-AlGaAs two-
dimensional hole systems reveals the presence of quantum corrections to the resistivity at …

The goal of this paper is to highlight several issues which are most crucial for the
understanding of the “metal–insulator transition” in two dimensions. We discuss some …

For intermediate Coulomb energy to Fermi energy ratios rs, spinless fermions in a random
potential form a new quantum phase which is neither a Fermi glass, nor a Wigner crystal …

Abstract Two-dimensional (2D) electronic systems can exhibit dramatic drops in resistivity, ρ
xx, as the temperature T→ 0, which has renewed debate as to whether 2D systems may …

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 …

We have measured the conductivity of high-mobility (001) Si metal-oxide-semiconductor
field effect transistors over wide ranges of electron densities n=(1.8–15)× 10 11 cm− 2 …