title: Large networks of vertical multi-layer graphenes with morphology-tunable magnetoresistance.
abstract: We report on the comparative study of magnetotransport properties of large-area vertical few-layer graphene networks with different morphologies, measured in a strong (up to 10 T) magnetic field over a wide temperature range. The petal-like and tree-like graphene networks grown by a plasma enhanced CVD process on a thin (500 nm) silicon oxide layer supported by a silicon wafer demonstrate a significant difference in the resistance-magnetic field dependencies at temperatures ranging from 2 to 200 K. This behaviour is explained in terms of the effect of electron scattering at ultra-long reactive edges and ultra-dense boundaries of the graphene nanowalls. Our results pave a way towards three-dimensional vertical graphene-based magnetoelectronic nanodevices with morphology-tuneable anisotropic magnetic properties.
authors.affiliation: Institute for Superconducting and Electronic Materials (ISEM), Faculty of Engineering, University of Wollongong, NSW 2522, Australia. Xiaolin@uow.edu.au.
authors.forename: Zengji
authors.initials: Z
authors.lastname: Yue
authors.forename: Igor
authors.initials: I
authors.lastname: Levchenko
authors.forename: Shailesh
authors.initials: S
authors.lastname: Kumar
authors.forename: Donghan
authors.initials: D
authors.lastname: Seo
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Wang
authors.forename: Shixue
authors.initials: S
authors.lastname: Dou
authors.forename: Kostya Ken
authors.initials: KK
authors.lastname: Ostrikov