Disorder effect on the localization/delocalization in incommensurate potential
Mesoscale and Nanoscale Physics
2009-11-11 v1
Abstract
The interplay between incommensurate (IC) and random potentials is studied in a two-dimensional symplectic model with the focus on localization/delocalization problem. With the IC potential only, there appear wavefunctions localized along the IC wavevector while extended perpendicular to it. Once the disorder potential is introduced, these turn into two-dimensional anisotropic metallic states beyond the scale of the elastic mean free path, and eventually becomes localized in both directions at a critical strength of the disorder. Implications of these results to the experimental observation of the IC-induced localization is discussed.
Cite
@article{arxiv.cond-mat/0604120,
title = {Disorder effect on the localization/delocalization in incommensurate potential},
author = {Masaru Onoda and Naoto Nagaosa},
journal= {arXiv preprint arXiv:cond-mat/0604120},
year = {2009}
}
Comments
4 pages, 3 figures (7 files), RevTeX