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|Type:||Artigo de periódico|
|Title:||Hidden scaling in the quantum Hall metal-insulator transition|
|Abstract:||Scaling properties of the quantum Hall metal-insulator transition are severely affected by finite-size effects in small systems. Surprisingly, despite the narrow spatial range where probability structure functions exhibit multifractal scaling, we clearly verify the existence of extended self-similarity-a hidden infrared scaling phenomenon related to the peculiar form of the crossover at the onset of nonmultifractal behavior. As finite-size effects get stronger for structure functions with negative orders, the parabolic approximation for the multifractal spectrum loses accuracy. However, by means of an extended self-similarity analysis, an improved evaluation of the multifractal exponents is attained for negative orders too, rendering them consistent with previous results, which rely on computations performed for considerably larger systems.|
|Editor:||American Physical Soc|
|Citation:||Physical Review B. American Physical Soc, v. 69, n. 4, 2004.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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