2007/07/31 by H. Haugen, Håvard Jostein Haugen, Daniel Huertas-Hernando +2
Materials Science · Physics and Astronomy · #Graphene research and applications #Magnetic properties of thin films #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.77.115406
published as Phys. Rev. B 77, 115406 (2008) · 9 pages, 11 figures
openalex publication_date 2008/03/05 · arxiv created 2008/03/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04
Ferromagnetic insulators deposited on graphene can induce ferromagnetic correlations in graphene. We estimate that induced exchange splittings \ensuremathΔ\ensuremath∼5\phantom\rule0.3em0exmeV can be achieved by, e.g., using the magnetic insulator EuO. We study the effect of the induced spin splittings on the graphene transport properties. The exchange splittings in proximity-induced ferromagnetic graphene can be determined from the transmission resonances in the linear response conductance or, independently, by magnetoresistance measurements in a spin-valve device. The spin polarization of the current near the Dirac point increases with the length of the barrier, so that long systems are required to determine \ensuremathΔ experimentally.