Metal-insulator transition in spatially-correlated random magnetic field system
Disordered Systems and Neural Networks
2007-05-23 v1 Strongly Correlated Electrons
Abstract
We reexamine the problem of delocalization of two-dimensional electrons in the presence of random magnetic field. By introducing spatial correlations among random fluxes, a well-defined metal-insulator transition characterized by a two-branch scaling of conductance has been demonstrated numerically. Critical conductance is found non-universal with a value around . Interesting connections of this system with the recently observed B=0 two-dimensional metallic phase (Kravchenko et al., Phys. Rev. B {\bf 50}, 8039 (1994)) are also discussed.
Keywords
Cite
@article{arxiv.cond-mat/9901019,
title = {Metal-insulator transition in spatially-correlated random magnetic field system},
author = {D. N. Sheng and Z. Y. Weng},
journal= {arXiv preprint arXiv:cond-mat/9901019},
year = {2007}
}
Comments
4 pages, LaTeX, 4 PS figures