Controllable spin transport in ferromagnetic graphene junctions

By T. Yokoyama. 2008

144 citations recorded by the source corpus.

We study spin transport in normal/ferromagnetic/normal graphene junctions where a gate electrode is attached to the ferromagnetic graphene. We find that, due to the exchange field of the ferromagnetic graphene, spin current through the junctions has an oscillatory behavior with respect to the chemical potential in the ferromagnetic graphene, which can be tuned by the gate voltage. In particular, we obtain a spin current reversal controllable by the gate voltage. Our prediction of high controllability of spin transport in ferromagnetic graphene junctions may contribute to the development of spintronics.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/495075842f0bc1a81b6fe3427bf5514d12367101