Metal-insulator transitions and the effects of electron-electron interactions in two-dimensional electron systems

TL;DR

This paper reviews experimental findings on metal-insulator transitions and electron-electron interactions in two-dimensional systems, highlighting recent discoveries of enhanced spin susceptibility and effective mass in silicon MOSFETs.

Contribution

It provides a critical analysis of recent experimental results, emphasizing the role of electron-electron interactions in 2D systems' phase transitions.

Findings

Strong enhancement of spin susceptibility in silicon MOSFETs

Significant increase in effective mass near transition points

Evidence supporting interaction-driven metal-insulator transition

Abstract

Experimental results on the metal-insulator transitions and the anomalous properties of strongly interacting two-dimensional electron systems are reviewed and critically analyzed. Special attention is given to recent results for the strongly enhanced spin susceptibility and effective mass in low-disordered silicon MOSFETs.