Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
1998-11-09
Ann. Phys. (Leipzig) 7, 5-6 (1998) 437-441
Physics
Condensed Matter
Disordered Systems and Neural Networks
5 pages, 4 figures, to appear in Proceedings PILS'98 in Ann. Physik Leibzig 1998
Scientific paper
10.1002/(SICI)1521-3889(199811)7
We have calculated wave functions and matrix elements of the dipole operator in the two- and three-dimensional Anderson model of localization and have studied their statistical properties in the limit of weak disorder. In particular, we have considered two cases. First, we have studied the fluctuations as an external Aharonov-Bohm flux is varied. Second, we have considered the influence of incipient localization. In both cases, the statistical properties of the eigenfunctions are non-trivial, in that the joint probability distribution function of eigenvalues and eigenvectors does no longer factorize. We report on detailed comparisons with analytical results, obtained within the non-linear sigma model and/or the semiclassical approach.
Mehlig Bernhard
Roemer Rudolf A.
Uski Ville
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