Transport properties of single-wall carbon nanotube Y junctions

摘要: Quantum conductivity of a wide class carbon nanotube Y junctions is calculated using an efficient Green’s function embedding scheme. Our results indicate that rectification and switching properties these depend strongly on the symmetry to lesser degree chirality. We find zig-zag tube forming stem symmetric junction sufficient cause perfect across junction, otherwise theI-V characteristics remain asymmetric with some leakage current for positive bias voltages. For other hand, we no at all possible. invoke model calculation involving branching in molecules as well nanotubes explain dependence nature geometry branching.