title: Structure and magnetic properties of mono- and bi-layer graphene films on ultraprecision figured 4H-SiC(0001) surfaces.
abstract: Monolayer and bilayer graphene films with a few hundred nm domain size were grown on ultraprecision figured 4H-SiC(0001) on-axis and 8 degrees -off surfaces by annealing in ultra-high vacuum. Using X-ray photoelectron spectroscopy (XPS), atomic force microscopy, reflection high-energy electron diffraction, low-energy electron diffraction (LEED), Raman spectroscopy, and scanning tunneling microscopy, we investigated the structure, number of graphene layers, and chemical bonding of the graphene surfaces. Moreover, the magnetic property of the monolayer graphene was studied using in-situ surface magneto-optic Kerr effect at 40 K. LEED spots intensity distribution and XPS spectra for monolayer and bilayer graphene films could become an obvious and accurate fingerprint for the determination of graphene film thickness on SiC surface.
authors.affiliation: Research Center for Ultra-Precision Science and Technology, Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 565-0871, Japan.
authors.forename: Azusa N
authors.initials: AN
authors.lastname: Hattori
authors.forename: Takeshi
authors.initials: T
authors.lastname: Okamoto
authors.forename: Shun
authors.initials: S
authors.lastname: Sadakuni
authors.forename: Junji
authors.initials: J
authors.lastname: Murata
authors.forename: Hideo
authors.initials: H
authors.lastname: Oi
authors.forename: Kenta
authors.initials: K
authors.lastname: Arima
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Sano
authors.forename: Ken
authors.initials: K
authors.lastname: Hattori
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Daimon
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Endo
authors.forename: Kazuto
authors.initials: K
authors.lastname: Yamauchi
mesh_terms: D017554:Carbon Compounds, Inorganic / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008280:Magnetics; D008422:Materials Testing; D008567:Membranes, Artificial; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D017655:Silicon Compounds / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D017554:Carbon Compounds, Inorganic; D046911:Macromolecular Substances; D008567:Membranes, Artificial; D017655:Silicon Compounds; D006108:Graphite; C022088:silicon carbide