title: Toward wafer scale fabrication of graphene based spin valve devices.
abstract: We demonstrate injection, transport, and detection of spins in spin valve arrays patterned in both copper based chemical vapor deposition (Cu-CVD) synthesized wafer scale single layer and bilayer graphene. We observe spin relaxation times comparable to those reported for exfoliated graphene samples demonstrating that chemical vapor deposition specific structural differences such as nanoripples do not limit spin transport in the present samples. Our observations make Cu-CVD graphene a promising material of choice for large scale spintronic applications.
authors.affiliation: Graphene Research Center & Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Avsar
authors.forename: Tsung-Yeh
authors.initials: TY
authors.lastname: Yang
authors.forename: Sukang
authors.initials: S
authors.lastname: Bae
authors.forename: Jayakumar
authors.initials: J
authors.lastname: Balakrishnan
authors.forename: Frank
authors.initials: F
authors.lastname: Volmer
authors.forename: Manu
authors.initials: M
authors.lastname: Jaiswal
authors.forename: Zheng
authors.initials: Z
authors.lastname: Yi
authors.forename: Syed Rizwan
authors.initials: SR
authors.lastname: Ali
authors.forename: Gernot
authors.initials: G
authors.lastname: Güntherodt
authors.forename: Byung Hee
authors.initials: BH
authors.lastname: Hong
authors.forename: Bernd
authors.initials: B
authors.lastname: Beschoten
authors.forename: Barbaros
authors.initials: B
authors.lastname: Özyilmaz
mesh_terms: D003300:Copper / Q000737:chemistry*; D006108:Graphite / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D006108:Graphite; D003300:Copper