Related papers: Metal-Insulator Transition in Disordered and Inter…

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Superconductor-Metal-Insulator crossover in disordered thin films is discussed on the basis of a random junction-network model.

This paper has been withdrawn by the author(s) due to the discussion was made on the basis of linear term merely, which is incomplete.

We have varied the disorder in a two-dimensional electron system in silicon by applying substrate bias. When the disorder becomes sufficiently low, we observe the emergence of the metallic phase, and find evidence for a metal-insulator…

This paper has been withdrawn as it has been superseded by postings arXiv:quant-ph/0702147 and arXiv:0712.2935

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The theory for disordered itinerant ferromagnets developed in a previous paper is used to construct a simple effective field theory that is capable of describing the quantum phase transition from a ferromagnetic metal to a ferromagnetic…

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