Electronic transport properties on V-shaped-notched zigzag graphene nanoribbons junctions

Using nonequilibrium Green's functions in combination with the density functional theory, the spin-dependent electronic transport properties on V-shaped notched zigzag-edged graphene nanoribbons junctions have been calculated. The results show that the electronic transport properties are strongly depending on the type of notch and the symmetry of ribbon. The spin-filter phenomenon and negative differential resistance behaviors can be observed. A physical analysis of these results is given. -- Highlights: → Spin-dependent electronic transport on V-shaped notched ZGNRs junctions. → The effects of armchair and zigzag notches on ZGNRs have been considered. → The currents will be reduced for notched systems. → The spin-up and spin-down display different behaviors. → The transport will be suppressed and NDR behaviors can be observed.