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Ultrathin epitaxial graphite was grown on single-crystal silicon carbide by vacuum graphitization. The material can be patterned using standard nanolithography methods. The transport properties, which are closely related to those of carbon nanotubes, are dominated by the single epitaxial graphene layer at the silicon carbide interface and reveal the Dirac(More)
Graphene nanoribbons will be essential components in future graphene nanoelectronics. However, in typical nanoribbons produced from lithographically patterned exfoliated graphene, the charge carriers travel only about ten nanometres between scattering events, resulting in minimum sheet resistances of about one kilohm per square. Here we show that(More)
We present a structural analysis of the multi-layer graphene-4HSiC(000 ¯ 1) system using Surface X-Ray Reflectivity. We show for the first time that graphene films grown on the C-terminated (000 ¯ 1) surface have a graphene-substrate bond length that is very short (1.62Å). The measured distance rules out a weak Van der Waals interaction to the substrate and(More)
Understanding the modification of the graphene's electronic structure upon doping is crucial for enlarging its potential applications. We present a study of nitrogen-doped graphene samples on SiC(000) combining angle-resolved photoelectron spectroscopy, scanning tunneling microscopy and spectroscopy and X-ray photoelectron spectroscopy (XPS). The comparison(More)
We investigate a novel method of fabricating a network of graphene nanoribbon structures. The process is a sharp departure from conventional nanolithographic techniques in both method and amount of time required. Epitaxial graphene prepared on single crystal 4H-SiC(0001) was etched with O 2 plasma through 0.2 µm porous filters adhered to the surface of the(More)
PREFACE This thesis consists of two distinct components: (1) Spin-polarized electron transport through aluminum array nanoparticles, (2) A single electric relaxation process in Barium Strontium Titanate (BST) nanoparticles. For the first component (chapters 2-5), we studied electron spin transport in nanome-ter scale aluminum grains as embedded in a(More)
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