Advantages of CNT and graphene for spintronics

Abstract

This paper presents the advantages of carbon nanotubes and graphene for spintronics. The advantage of CNT and graphene can be illustrated by experimental data on the basic structure composed a lateral channel connected to magnetic electrodes. In the simplest situation, i.e lateral channels between ferromagnetic sources and drains, the spin signal is simply the change ΔR between the parallel and antiparallel magnetic configurations of the electrodes.tunnel contacts with cobalt shows also large effects. Graphene between tunnel contacts with cobalt shows also large effects. The analysis of the results on CNT [1-2] shows that the large spin signals come from the combination of the short electron dwell time (due to the large velocity) with a long spin life time (≈50 ns). The spin diffusion length reaches 45 μm.