title: Vertical graphene spin valve with Ohmic contacts.
abstract: Evident spin valve signals are observed in Co/graphene/Co sandwich structures with both monolayer and two-layer graphene stacks at temperatures from 1.5 K to 300 K. All the devices demonstrate linear current-voltage curves, indicating that an Ohmic property is dominating rather than a tunneling effect. The vertical graphene spin valves have potential applications in high-density non-volatile memories.
authors.affiliation: State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871, P.R. China. liaozm@pku.edu.cn.
authors.forename: Jie
authors.initials: J
authors.lastname: Meng
authors.forename: Jing-Jing
authors.initials: JJ
authors.lastname: Chen
authors.forename: Yuan
authors.initials: Y
authors.lastname: Yan
authors.forename: Da-Peng
authors.initials: DP
authors.lastname: Yu
authors.forename: Zhi-Min
authors.initials: ZM
authors.lastname: Liao