15. Metal-insulator transition in 2D

Taken by Michał Białończyk

The standard scaling theory predicts that a 2D electron gas should be always localized because of disorder. Some experimental results seem to contradict this prediction. However, neither the experimental, not the theoretical results give clear conclusions. The first paper (Review of Modern Physics) is by the author of the first experimental observation, while the second one (Phys. Rev. B) is by some ''skeptical'' authors.