Abstract
Abstract An extension of Sheng and Zhang's 2D quantum percolation model of disordered metal films to 3D systems has been described. Our simulation studies, carried out on sc lattice for the ratio of Fermi energy E to the hopping matrix element U , E / U = 0.01, have shown that for the metal concentration p = 0.34 being close to the classical site-percolation threshold p c ≅ 0.312, i.e. in the strong scattering regime, 3D dimensionless conductance g = G /( e 2 / h ) decreases exponentially with the linear size L of the sample. The localization length 0.36 has been found. On the other side, for the metal concentration p = 0.6, g tends to increase linearly with L . These results are consistent with the ones obtained for 3D quantum site-percolation by Soukoulis et al. that close to the center of the band the value of the quantum percolation threshold p q ≅ 0.54.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physica A: Statistical Mechanics and its Applications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
