Optospintronics in Graphene via Proximity Coupling.

ABSTRACT: The observation of micrometer size spin relaxation makes graphene a promising material for applications in spintronics requiring long-distance spin communication. However, spin dependent scatterings at the contact/graphene interfaces affect the spin injection efficiencies and hence prevent the material from achieving its full potential. While this major issue could be eliminated by nondestructive direct optical spin injection schemes, graphene's intrinsically low spin-orbit coupling strength and optical absorption place an obstacle in their realization. We overcome this challenge by creating sharp artificial interfaces between graphene and WSe₂ monolayers. Application of circularly polarized light activates the spin-polarized charge carriers in the WSe₂ layer due to i

SUBMITTER: Avsar A 

PROVIDER: S-EPMC5707628 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature