Novel Properties of The Apparent Metal-Insulator Transition in Two-Dimensional Systems

Details Novel Properties of The Apparent Metal-Insulator Transition in Two-Dimensional Systems Novel Properties of The Apparent Metal-Insulator Transition in Two-Dimensional Systems

1998-05-10

arxiv.org/abs/cond-mat/9805113v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 Figures

Scientific paper

10.1103/PhysRevB.58.R7520

The low-temperature conductivity of low-density, high-mobility, two-dimensional hole systems in GaAs was studied. We explicitly show that the metal-insulator transition, observed in these systems, is characterized by a well-defined critical density, p_0c. We also observe that the low-temperature conductivity of these systems depends linearly on the hole density, over a wide density range. The high-density linear conductivity extrapolates to zero at a density close to the critical density.

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