Unifying model for several classes of two-dimensional phase transition |
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Authors: | Dubi Yonatan Meir Yigal Avishai Yshai |
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Institution: | Physics Department, Ben-Gurion University, Beer Sheva 84105, Israel. |
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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. |
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