Absence of localization on the 2d model with long-range correlated off-diagonal disorder

We study the one-electron eigenstates in atwo-dimensional (2d) Anderson model with long-range correlated off-diagonaldisorder, generated by a 2ddiscrete Fourier method. The dynamics of an initiallylocalized wave packet is investigated by numerically solving the2d time-dependent Schrödinger equation. In additional the participation number and itsscaling behavior was obtained through direct diagonalization. Our numerical data suggest that the systemexhibits a ballistic dynamics in the stronglycorrelated disorder regime. Moreover, the scaling analysis of mean participation number around the band centeralso indicates the presence of extended states for high degree of correlations.