Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9789590 | Physica E: Low-dimensional Systems and Nanostructures | 2005 | 5 Pages |
Abstract
The quantum Hall effect is studied numerically in modulated two-dimensional electron systems in the presence of disorder. Based on the scaling property of the Hall conductivity as well as the localization length, the critical energies where the states are extended are identified. We find that the critical energies, which are distributed to each of the subbands, combine into one when the disorder becomes strong, in the way depending on the symmetry of the disorder and/or the periodic potential.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
M. Koshino, T. Ando,