Avoided Band Crossings: Tuning Metal-Insulator Transitions in Chaotic Systems
Condensed Matter
2009-10-30 v2 chao-dyn
Chaotic Dynamics
Abstract
We show that avoided crossings of energy bands may give rise to a variety of phenomena such as transitions from metal to insulator and vice versa, changes in localization lengths, and changes in the fractal dimension of energy spectra. We explain the occurrence of these phenomena in the kicked Harper model under classically chaotic conditions and predict them to occur in other systems.
Keywords
Cite
@article{arxiv.cond-mat/9709054,
title = {Avoided Band Crossings: Tuning Metal-Insulator Transitions in Chaotic Systems},
author = {R. Ketzmerick and K. Kruse and T. Geisel},
journal= {arXiv preprint arXiv:cond-mat/9709054},
year = {2009}
}
Comments
4 pages, 5 figures, minor changes (figure completed, typo corrected), to appear in Phys. Rev. Lett