The so-called two dimensional metal-insulator transition

Details The so-called two dimensional metal-insulator transition The so-called two dimensional metal-insulator transition

2004-11-19

arxiv.org/abs/cond-mat/0411528v2

Solid State Comm. 135, 579 (2005)

Physics

Condensed Matter

Disordered Systems and Neural Networks

12 pages, 4 figures; Revised final version with additional references and some modifications in the text

Scientific paper

We provide a critical perspective on the collection of low-temperature transport phenomena in low-density two-dimensional semiconductor systems often referred to as the 2D metal-insulator transition. We discuss the physical mechanisms underlying the anomalous behavior of the two-dimensional effective metallic phase and the metal-insulator transition itself. We argue that a key feature of the 2D MIT physics is the long-range bare Coulombic disorder arising from the random distribution of charged impurities in the low-density 2D semiconductor structures.

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