We study the localization of electronic wave functions in the one-dimensional Anderson model with diagonal disorder, where the site energies are long-range correlated. We find different behavior at the band edge and at the band center. Close to the band edge, the correlations lead to a decrease in the localization lengths. At the band center, in contrast, the localization length is drastically enhanced by the correlations. Using level statistics we find strong evidence that also these states remain localized.
|Number of pages||5|
|Journal||Physica A: Statistical Mechanics and its Applications|
|State||Published - 15 Apr 1999|
|Event||Proceedings of the 1998 International Conference on Percolation and Disordered Systems: Theory and Applications - Giessen, Ger|
Duration: 14 Jul 1998 → 17 Jul 1998
Bibliographical noteFunding Information:
We wish to thank Shlomo Alexander and Richard Berkovits for valuable discussions and gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft. One of us (S.R.) has been supported by a Minerva fellowship.