Ultrahigh-mobility semiconducting epitaxial graphene on ... - Nature
2024年1月3日 · Here we show that well-annealed epigraphene on a specific silicon carbide crystal face is a 2D semiconductor with very high mobility. Epigraphene is graphene that spontaneously forms on silicon...
Atomic and electronic structure of trilayer graphene/SiC(0001 ...
2016年9月15日 · The STS and DFT spectra show a clear evidence for flat bands near Dirac energy in trilayer graphene on SiC. The flat bands, which contribute to a pronounced peak in the tunneling density of...
Scanning tunneling microscopy (STM) of graphene
2021年1月1日 · Gate-dependent dI/dV spectra of graphene on BN exhibit nearly linear density of states as a function of energy without a gap and spectroscopic features that are sharper than those obtained for graphene on SiO 2 because of the reduction in local microscopic charge inhomogeneity for graphene on BN compared to graphene on SiO 2.
Scanning Tunneling Microscopy and Spectroscopy of Graphene
2012年1月1日 · Scanning tunneling microscopy (STM) and spectroscopy (STS) are powerful tools that can reveal the intrinsic properties of the masslesss Dirac fermions in graphene. In particular in the presence of a magnetic field STS gives direct access to the unique sequence of...
graphene/SiC interface. We discuss the evolution of the spectra with graphene coverage in terms of possible indirect effects of the overlying graphene layer(s).
Atomic and electronic structure of few-layer graphene on SiC…
2008年4月18日 · In the present work, we have studied the morphology, atomic scale structure, and electronic structure of thin films of few-layer graphene (FLG) on SiC (0001) by scanning tunneling microscopy and spectroscopy (STS). We show that a quantitative evaluation of the roughness induced by the interface is a tool for determining the layer thickness of FLG.
STM/STS investigation of edge structure in epitaxial graphene
2012年8月1日 · We investigate the edges of epitaxial graphene on 6H-SiC (0001) using STM/STS. Both zigzag and armchair edges are resolved in a 150° edge corner. The graphene layer exhibits one-dimensional ridge in the vicinity to step edge. Graphene is a single layer of sp 2 -bonded carbon atoms arranged in a two-dimensional honeycomb lattice.
Atomic and electronic structure of monolayer graphene on
2009年12月23日 · We present an investigation of the atomic and electronic structure of graphene monolayer islands on the 6H-SiC(000¯1)(3×3)[SiC(3×3)] surface reconstruction using scanning tunneling microscopy (STM) and spectroscopy (STS). The orientation of the graphene lattice changes from one island to the other.
STM studies of epitaxial graphene | MRS Bulletin - Springer
2012年11月23日 · This article reviews the use of scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS) to characterize the physical and electronic properties of epitaxial graphene.
[PDF] Scanning tunneling spectroscopy of inhomogeneous …
2007年6月26日 · The authors present a scanning tunneling spectroscopy (STS) study of the local electronic structure of single and bilayer graphene grown epitaxially on a SiC(0001) surface. Low voltage topographic images reveal fine, atomic-scale carbon networks, whereas higher bias images are dominated by emergent spatially inhomogeneous large-scale structure ...