Anderson localization in two-dimensional disordered systems
2003 (English)In: Synthetic Metals, ISSN 0379-6779, Vol. 139, no 2, 239-244 p.Article in journal (Refereed) Published
Using the transfer matrix method we have calculated the localization length in a 2D (two dimension) rectangular lattice with both on-site and off-diagonal disorder. Using finite size scaling we show that systems with off-diagonal disorder are much more sensitive to disorder than the system with on-site disorder, e.g. at the same amount of disorder (W=w=2) the localization length for on-site disorder is 104 times longer than for off-diagonal disorder. We consider both isotropic and anisotropic systems, where the latter can be considered as a model for an organic crystal. In the anisotropic case the maximum localization length is at the band center, the isotropic system has a maximum away from the band center.
Place, publisher, year, edition, pages
2003. Vol. 139, no 2, 239-244 p.
Transport, Disorder, Organic metals
IdentifiersURN: urn:nbn:se:liu:diva-13868DOI: 10.1016/S0379-6779(03)00125-5OAI: oai:DiVA.org:liu-13868DiVA: diva2:22053