Fyzikální ústav Akademie věd ČR

Seminar Friday, 29/11/2013 10:00 - 11:00

Speakers: Peter Markoš (Fakulta elektroniky a informatiky, Slovenská technická univerzita, Bratislava)
Place: Na Slovance, main lecture hall
Presented in English
Organisers: Department of Condensed Matter Theory

Abstract: Disordered electron systems undergo a metal-insulator transition when either Fermi energy crosses the mobility edge or the strength of the disorder increases over a critical value. We obtain by simple numerical simulations fundamental transport and spectral properties of these systems in the critical regime of the metal-insulator transition and present a numerical verification of the single parameter scaling theory of Anderson localization. As an example, numerical data for the critical exponents in dimensions 2 < d <= 5 are presented. Numerical data are in variance with theoretical predictions. Reasons for this discrepancy will be discussed.