Origins of anomalous electronic structures of epitaxial graphene on

Apr 29, 2008 - diffraction (LEED) patterns indicate a larger scale recon- struction with a 6√3 × 6 ... eral experimental data [12, 13, 14, 18, 19, ...

0 downloads 2 Views 736KB Size

Recommend Documents

Jan 21, 2010 - thin Bernal-stacked graphite sample. The origin of multilayer ... sheet.14,17–25 Its relevant electronic signature is the dispersion of the π- and ...

4 Center for Nanoscale Science and Engineering, Departments of Chemistry and Chemical & ... unsolved problem. Carbon nanotube electronics provided an important step forward in carbon- based electronics(4). Carbon nanotubes are basically large ......

Apr 12, 2011 - 1 δ zigzag edge armchair edge. Klein edge. FIG. 1: (Color online) Geometry of the graphene lattice showing: primitive lattice vectors a1,2, diatomic lattice unit cell ... The six cones can be split into two equivalence classes (cones

Jul 18, 2008 - exfoliated layers and rise from ~ 46 to 64 and 74 cm-1 when comparing a monolayer sample with bi- and trilayer graphene, respectively. Despite the broadening, the 2D peak of monolayer epitaxial graphene can still be fitted with a singl

launched a huge research interest in this novel material which has the potential to become a basic material for electronic devices. ... orientation. [12] For graphene device applications, however, it is of great interest to control the ...... main st

Jul 22, 2015 - Second, we treat nonlinear reaction-diffusion systems (RDS), which will be closer to the main theme of this paper. The third class of examples ...

Electronic devices using epitaxial graphene on Silicon Carbide require encapsulation to avoid uncontrolled doping by impurities deposited in ambient.

2 School of Physcis, Beijing Institute of Technology, Beijing 100081, People's Republic of China. 3 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190,. People's Republic of

Mar 11, 2010 - substrate, however, usually reduces the charge carrier mobility considerably. We show that .... is given by the pMLAu and nMLAu alone. The charge carrier densities deduced from the size of the Fermi surface (see mid- dle and right pane

Apr 3, 2007 - due to absence of localized states in the bulk of the material.Epitaxial graphene can ... Email address: deheer[email protected] (Walt A. de Heer). Preprint submitted to Solid State ... The possibility that epitaxial graphene

Pentacene has been used widely in organic devices, and the interface structure between pentacene and a substrate is known to significantly influence device performances. Here we demonstrate that molecular ordering of pentacene on graphene depends on

Sep 15, 2017 - LEEM is a structure-sensitive technique which uses elastically ..... M. Lozada, T. Georgiou, C. R. Woods, F. Withers, P. Blake, G. Eda, A. Wirsig,.

Feb 13, 2007 - lem s with large intrinsic resistance in contacts and the inability to controltube helicity, and thus whether or notthey are m etallic orsem iconducting,have m ade large scale circuit designs problem atic. The proposed solu- tion to th

vacuum restores its virgin condition. An increase ... charge density allows for QHE plateaus at moderate magnetic field, (b) step free non .... 2 ){1 we find δnS. 2x1011cm{2, ρs. 130 - and 8500 cm2/Vs (p{ doped side) ( 6200 cm2/Vs, n{doped side) fo

Jan 4, 2018 - and Physics, Ke Karlovu 5, Prague 2, CZ-121 16, Czech Republic. (Dated: January 8, 2018). We have measured optical absorption in mid-infrared spectral range on hydrogen intercalated epitaxial graphene grown on silicon face of SiC. We ha

... energy is also affected by in-plane lattice-strain. The effective tuning of electronic structures under lattice-modification provides an important insight into the physics driven by the coexisting strong spin-orbit coupling and electronic correla

Republic of China. 2 Department of Physics and Astronomy, Key Laboratory of Artificial Structures and ... Here we study effects of one-dimensional tilt grain boundaries on structures and electronic spectra of graphene multilayers by scanning tunnelin

Apr 2, 2013 - photoemission and adsorption spectroscopy spectra of N dopants at vacancies and Stone-Wales defect in connection with ... of two or more N dopants were reported, the atomic configurations were not yet solved.25 In addition, the STM imag

Dec 20, 2007 - The mastering of the interface morphology is then a priority. The ... wave basis cutoff equal to 211 eV; The USPP have been extensively tested, ... Experiments were done first on the buffer layer surface, and second on a mixed.

(0001) faces of 4H- and 6H-SiC. Hall effect mobilities and sheet carrier densities of the films were measured at 300 K and 77 K and the data depended on the growth face. About 40% of the samples exhibited holes as the dominant carrier, independent of

Aug 28, 2013 - data demonstrates that the local on-top nano-sized contacts do not induce significant strain to the epitaxial graphene films ... Furthermore, transport is a non-local tech- nique, therefore, this approach lacks ... Keeping in mind that

graphite. This article presents for the first time the structures of graphene at the atomic level and shows how it differs from that of benzene, due to the difference in the double bond and resonance bond based radii of carbon. The carbon atom of an

charge transport in the YBCO films. The anomalies could therefore reflect a two-band behaviour or even different kinds of charge carriers. Our continuing studies of the influence of oxygen order and stoichiometry will help to complement our present u

Abstract Using angle-resolved photoemission spectroscopy (ARPES), we studied bulk and surface electronic band ... ARPES data with the first-principles calculation reveals the details of band structures, orbital characters ... of PbTe-based thermoelec