Münster 1999 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DY: Dynamik und Statistische Physik
DY 41: POSTER II
DY 41.26: Poster
Donnerstag, 25. März 1999, 09:30–13:00, Z
Incipient localisation in the Anderson model — •V. Uski1, B. Mehlig2, R. A. Römer1, and M. Schreiber1 — 1Institut für Physik, Technische Universität, D-09107 Chemnitz — 2Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, D-01187 Dresden
We study statistical properties of the eigenfunctions
in the Anderson model of localisation. In the
metallic regime, these are described by the Gaussian
ensembles of random matrix theory. As disorder is
increased, incipient localisation causes
deviations from the random matrix behaviour [1,2].
We have computed wave functions in this regime
in the one-, two- and three-dimensional Anderson models at zero
and finite magnetic field, and have analysed deviations from the
predictions of random matrix theory in detail.
This allows us to compare with
analytical predictions
based on the optimal fluctuation method [1] and the
non-linear σ-model [2].
[1] I. E. Smolyarenko and B. L. Altshuler, Phys. Rev. B 55, 10451
(1997).
Y. V. Fyodorov and A. D. Mirlin, Phys. Rev. B 51, 13403 (1995).