Unifying model for several classes of two-dimensional phase transition

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Abstract

A relatively simple and physically transparent model based on quantum percolation and dephasing is employed to construct a global phase diagram which encodes and unifies the critical physics of the quantum Hall, "two-dimensional metal-insulator," classical percolation and, to some extent, superconductor-insulator transitions. Using real-space renormalization group techniques, crossover functions between critical points are calculated. The critical behavior around each fixed point is analyzed and some experimentally relevant puzzles are addressed.

Original languageEnglish
Article number156406
JournalPhysical Review Letters
Volume94
Issue number15
DOIs
StatePublished - 22 Apr 2005

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