Anderson disorder in graphene nanoribbons: A local distribution approach

Disorder-induced gap behavior in graphene nanoribbons

We study the transport properties of graphene nanoribbons of standardized 30 nm width and varying lengths. We find that the extent of the gap observed in transport as a function of Fermi energy in these ribbons the “transport gap” does not have a strong dependence on ribbon length, while the extent of the gap as a function of source-drain voltage the “source-drain gap” increases with increasing...

Disorder-induced pseudodiffusive transport in graphene nanoribbons

P. Dietl,1 G. Metalidis,1,2 D. Golubev,1 P. San-Jose,3 E. Prada,3 H. Schomerus,3 and G. Schön1,2 1Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany 2DFG Center for Functional Nanostructures (CFN), Universität Karlsruhe, 76128 Karlsruhe, Germany 3Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom Received 22 April 2009; publ...

OFFPRINT Spatial distribution of local currents of massless Dirac fermions in quantum transport through graphene nanoribbons

We employ the formalism of bond currents, expressed in terms of the nonequilibrium Green functions, to image the charge flow between two sites of the honeycomb lattice of graphene ribbons of few nanometers width. In sharp contrast to nonrelativistic electrons, current density profiles of quantum transport at energies close to the Dirac point in clean zigzag graphene nanoribbons (ZGNR) differs m...

Effect of random edge-vacancy disorder in zigzag graphene nanoribbons

بررسی خواص مغناطیسی ریزساختارهای نانومتری گرافینی و نانوروبان‌های گرافینی زیگزاگ‎

The discovery of graphene and its remarkable electronic and magnetic properties has initiated great research interest in this material. Furthermore, there are many derivatives in these graphene related materials among which graphene nanoribbons and graphene nanofragments are candidates for future carbon-based nanoelectronics and spintronics. Theoretical studies have shown that magnetism can ari...