A spin-filter device based on armchair graphene nanoribbons

Details A spin-filter device based on armchair graphene nanoribbons A spin-filter device based on armchair graphene nanoribbons

2011-01-15

arxiv.org/abs/1101.2948v1

Appl. Phys. Lett. 98, 023106 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

The coherent spin-polarized electron transport through a zigzag-edge graphene flake (ZGF), sandwiched between two semi-infinite armchair graphene nanoribbons, is investigated by means of Landauer-Buttiker formalism. To study the edge magnetism of the ZGF, we use the half-filled Hubbard model within the Hartree-Fock approximation. The results show that the junction acts as a spin filter with high degree of spin polarization in the absence of magnetic electrodes and external fields. By applying a gate voltage the spin-filtering efficiency of this device can be effectively controlled and the spin polarization can reach values as high as 90%.

Affiliated with

Also associated with

No associations

Rating

A spin-filter device based on armchair graphene nanoribbons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A spin-filter device based on armchair graphene nanoribbons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A spin-filter device based on armchair graphene nanoribbons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-227889