000160388 001__ 160388
000160388 005__ 20180913060236.0
000160388 0247_ $$2doi$$a10.1016/j.susc.2008.09.030
000160388 02470 $$2ISI$$a000261361100002
000160388 037__ $$aARTICLE
000160388 245__ $$aSpatial modulation of the Dirac gap in epitaxial graphene
000160388 269__ $$a2008
000160388 260__ $$c2008
000160388 336__ $$aJournal Articles
000160388 520__ $$aWe use scanning tunneling spectroscopy (STS) at low temperatures to investigate the local electronic structure of mono- and bilayer graphene grown epitaxially on SiC(0001). Already for monolayer graphene, a gap opening is observed in the pi-bands at the Dirac point. The gap size is spatially modulated with the (6 root 3 x 6 root 3)R30 degrees periodicity of the interface structure. We ascribe this effect to a spatially dependent interface potential, which is imprinted into the graphene layer. For bilayer graphene the Dirac gap has a constant size, but a spatially localized mid-gap state is observed within. For both, gap state and pi-bands the intensities are strongly modulated with the atomic periodicity of graphene. (C) 2008 Elsevier B.V. All rights reserved.
000160388 6531_ $$aEpitaxial graphene
000160388 6531_ $$aScanning tunneling microscopy
000160388 6531_ $$aScanning tunneling spectroscopy
000160388 6531_ $$aScanning-Tunneling-Microscopy
000160388 6531_ $$aElectronic-Structure
000160388 6531_ $$aInterface Formation
000160388 6531_ $$aBilayer Graphene
000160388 6531_ $$aAtomic-Structure
000160388 6531_ $$aSurface
000160388 6531_ $$aGraphite
000160388 6531_ $$a6H-Sic(0001)
000160388 6531_ $$aReconstruction
000160388 6531_ $$aMorphology
000160388 700__ $$aVitali, L.
000160388 700__ $$aRiedl, C.
000160388 700__ $$aOhmann, R.
000160388 700__ $$aBrihuega, I.
000160388 700__ $$aStarke, U.
000160388 700__ $$0240038$$aKern, K.$$g105546
000160388 773__ $$j602$$qL127-L130$$tSurface Science
000160388 909C0 $$0252366$$pLSEN$$xU10152
000160388 909CO $$ooai:infoscience.tind.io:160388$$pSB$$particle
000160388 917Z8 $$xWOS-2010-11-30
000160388 937__ $$aEPFL-ARTICLE-160388
000160388 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000160388 980__ $$aARTICLE