Metal-insulator transitions are accompanied by huge resistivity changes, even over tens of
orders of magnitude, and are widely observed in condensed-matter systems. This article …

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 …

This is a complete and exhaustive review on the so-called holographic axion model—a
bottom-up holographic system characterized by the presence of a set of shift symmetric …

T he investigation of superconductivity in the presence of disorder began 60 years ago with
the work of Alexander Shal'nikov at the Institute for Physical Problems in Moscow. The …

The interplay between strong Coulomb interactions and randomness has been a long-
standing problem in condensed matter physics. According to the scaling theory of …

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 …

An overview of the measured transport properties of the two dimensional electron fluids in
high mobility semiconductor devices with low electron densities is presented as well as …

We report on a zero magnetic field transport study of a two-dimensional, variable-density,
hole system in GaAs. As the density is varied we observe, for the first time in GaAs-based …

The anomalous conducting phase that has been shown to exist in zero field in dilute two-
dimensional electron systems in silicon metal-oxide-semiconductor field effect transistors is …

We report the observation of a metal-insulator transition at B= 0 in a high mobility two
dimensional hole gas in a GaAs-AlGaAs heterostructure. A clear critical point separates the …