Remarks on theoretical modelling of spin-dependent electronic transport in carbon nanotubes and graphene

Abstract

Abstract:This contribution reports on charge and spin transport through graphene nanoribbons (GrNs) and carbon nanotubes (CNTs). The paper focuses on the giant magnetoresistance effect in these materials, and their potential usefulness for spintronic applications. As examples, the following devices are shortly discussed: GrNs in the ballistic transport regime, a CNT-based Schottky-barrier field effect transistor (CNT SB-FET), as well as CNT quantum dots in the Coulomb blockade limit.

Tunable ferromagnetism in assembled two dimensional triangular graphene nanoflakes

“…The hotly pursued carbon-based magnetic materials are potential candidates for such applications. [3][4][5][6][7] Unlike conventional spintronic materials where magnetism is due to d or f electrons, magnetism in carbon-based structures originates from p electrons, having weak spin-orbit coupling and hyperfine interactions 8 which are the main channels of relaxation and decoherence of electron spins. These properties together with the remarkable electronic and mechanical properties of carbon-based materials make them promising for transport of spin-polarized currents as well as for spin-based quantum information processing.…”