Microscopic Structure of the Metal-Insulator Transition in Two Dimensions

@article{Ilani2001MicroscopicSO,
  title={Microscopic Structure of the Metal-Insulator Transition in Two Dimensions},
  author={Shahal Ilani and Amir Yacoby and Diana Mahalu and H. Shtrikman},
  journal={Science},
  year={2001},
  volume={292},
  pages={1354 - 1357}
}
A single electron transistor is used as a local electrostatic probe to study the underlying spatial structure of the metal-insulator transition in two dimensions. The measurements show that as we approach the transition from the metallic side, a new phase emerges that consists of weakly coupled fragments of the two-dimensional system. These fragments consist of localized charge that coexists with the surrounding metallic phase. As the density is lowered into the insulating phase, the number of… 
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