Transport in strongly correlated two dimensional electron fluids

TL;DR

This paper reviews experimental transport data and theoretical models of strongly correlated two-dimensional electron fluids in high mobility semiconductors, highlighting phenomena not explained by traditional weakly interacting quasiparticle physics.

Contribution

It provides an overview of experimental observations and discusses the need for new theories to understand strong correlation effects in 2D electron fluids.

Findings

Transport features not explained by weakly interacting quasiparticles

Strong correlation effects are significant in 2D electron fluids

Further theoretical and experimental studies are needed

Abstract

We present an overview of the measured transport properties of the two dimensional electron fluids in high mobility semiconductor devices with low electron densities, and of some of the theories that have been proposed to account for them. Many features of the observations are not easily reconciled with a description based on the well understood physics of weakly interacting quasiparticles in a disordered medium. Rather, they reflect new physics associated with strong correlation effects, which warrant further study.