Exponents of the localization lengths in the bipartite Anderson model with off-diagonal disorder

Abstract

We investigate the scaling properties of the two-dimensional (2D) Anderson model of localization with purely off-diagonal disorder (random hopping). In particular, we show that for small energies the infinite-size localization lengths as computed from transfer-matrix methods together with finite-size scaling diverge with a power-law behavior. The corresponding exponents seem to depend on the strength and the type of disorder chosen.

6 pages, 8 EPS-figures, requires phbauth.cls

References in corpus (2)

• Energy-level statistics at the metal-insulator transition in anisotropic systems
• Anderson localization in bipartite lattices

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