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Current correlations and quantum localization in a random or homogeneous magnetic field

✍ Scribed by I.V. Gornyi; A.D. Mirlin; P. Wölfle

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
83 KB
Volume
12
Category
Article
ISSN
1386-9477

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✦ Synopsis

We study long-range correlations of equilibrium current densities in a two-dimensional mesoscopic system with the time reversal invariance broken by a random or homogeneous magnetic ÿeld. Our result is universal, i.e. it does not depend on the type (random potential or random magnetic ÿeld) or correlation length of disorder. Performing a closely connected analysis of the quantum correction to the conductivity in one-loop order, we show that it is non-divergent, in contrast to recent claims in the literature.

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