Singular Behavior of Eigenstates in Anderson's Model of Localization

Abstract

We observe a singularity in the electronic properties of the Anderson Model of Localization with bounded diagonal disorder, which is clearly distinct from the well-established mobility edge (localization-delocalization transition) that occurs in dimensions $d>2$. We present results of numerical calculations for Anderson's original (box) distribution of onsite disorder in dimensions $d$ = 1, 2 and 3. To establish this hitherto unreported behavior, and to understand its evolution with disorder, we contrast the behavior of two different measures of the localization length of the electronic wavefunctions - the averaged inverse participation ratio and the Lyapunov exponent. Our data suggest that Anderson's model exhibits richer behavior than has been established so far.

Correction to v1: Fig.3 caption now displayed

References in corpus (3)

• Anderson Transitions
• Extended States in a Lifshitz Tail Regime for Random Schrödinger Operators on Trees
• Commensurability effects in one-dimensional Anderson localization: anomalies in eigenfunction statistics

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