166 citations · 449 across the 14 of their papers we have counts for
14 papers
Growth and electronic properties of nanolines on TiO2-terminated SrTiO3(001) surfaces
W. Yan, W. Sitaputra, M. Skowronski +1
Surfaces of homoepitaxially grown TiO2-terminated SrTiO3(001) were studied in situ with scanning tunneling microscopy and spectroscopy. By controlling the Ti/Sr ratio, two-dimensio…
Characterization of hexagonal boron nitride layers on nickel surfaces by low-energy electron microscopy
P. C. Mende, Q. Gao, A. Ismach +5
The thickness and interfacial geometry of hexagonal boron nitride (hBN) films grown by chemical vapor deposition on polycrystalline nickel foils is studied using low-energy electro…
Inelastic Effects in Low-Energy Electron Reflectivity of Two-dimensional Materials
Qin Gao, P. C. Mende, M. Widom +1
A simple method is proposed for inclusion of inelastic effects (electron absorption) in computations of low-energy electron reflectivity (LEER) spectra. The theoretical spectra are…
Theory of Graphene-Insulator-Graphene Tunnel Junctions
S. C. de la Barrera, Qin Gao, R. M. Feenstra
Graphene-insulator-graphene vertical tunneling structures are discussed from a theoretical perspective. Momentum conservation in such devices leads to highly nonlinear current-volt…
Formation of a Buffer Layer for Graphene on C-face SiC{0001}
Guowei He, N. Srivastava, R. M. Feenstra
Graphene films prepared by heating the SiC(000-1) surface (the C-face of the {0001} surfaces) in a Si-rich environment are studied using low-energy electron diffraction (LEED) and…
Friedel Oscillation-Induced Energy Gap Manifested as Transport Asymmetry at Monolayer-Bilayer Graphene Boundaries
Kendal W. Clark, X. -G. Zhang, Gong Gu +4
We show that Friedel charge oscillation near an interface opens a gap at the Fermi energy for electrons with wave vectors perpendicular to the interface. If the Friedel gaps on two…
Low-Energy Electron Reflectivity of Graphene on Copper and other Substrates
N. Srivastava, Qin Gao, M. Widom +4
The reflectivity of low energy electrons from graphene on copper substrates is studied both experimentally and theoretically. Well-known oscillations in the reflectivity of electro…
Formation of Graphene on SiC(000-1) Surfaces in Disilane and Neon Environments
Guowei He, N. Srivastava, R. M. Feenstra
The formation of graphene on the SiC(000-1) surface (the C-face of the {0001} surfaces) has been studied, utilizing both disilane and neon environments. In both cases, the interfac…
Interface Structure of Graphene on SiC(000-1)
N. Srivastava, Guowei He, Luxmi +1
Graphene films prepared by heating the SiC(000-1) surface (the C-face of the {0001} surfaces) in vacuum or in a Si-rich environment are compared. It is found that different interfa…
Single-Particle Tunneling in Doped Graphene-Insulator-Graphene Junctions
R. M. Feenstra, Debdeep Jena, Gong Gu
The characteristics of tunnel junctions formed between n- and p-doped graphene are investigated theoretically. The single-particle tunnel current that flows between the two-dimensi…
Formation of Epitaxial Graphene on SiC(0001) using Vacuum or Argon Environments
Luxmi, N. Srivastava, R. M. Feenstra +1
The formation of graphene on the (0001) surface of SiC (the Si-face) is studied by atomic force microscopy, low-energy electron microscopy, and scanning tunneling microscopy/spectr…
Thickness monitoring of graphene on SiC using low-energy electron diffraction
P. J. Fisher, Luxmi, N. Srivastava +2
The formation of epitaxial graphene on SiC is monitored in-situ using low-energy electron diffraction (LEED). The possibility of using LEED as an in-situ thickness monitor of the g…
Morphology of Graphene on SiC(000-1) Surfaces
Luxmi, P. J. Fisher, N. Srivastava +5
Graphene is formed on SiC(000-1) surfaces (the so-called C-face of the crystal) by annealing in vacuum, with the resulting films characterized by atomic force microscopy, Auger ele…
Tunneling Spectroscopy of Graphene and related Reconstructions on SiC(0001)
Shu Nie, R. M. Feenstra
The 5x5, 6rt(3)x6rt(3)-R30deg, and graphene-covered 6rt(3)x6rt(3)-R30deg reconstructions of the SiC(0001) surface are studied by scanning tunneling microscopy and spectroscopy. For…