Graphene on Ru(0001): Evidence for two graphene band structures

Journal Article · Thu May 03 00:00:00 EDT 2012 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.85.195405· OSTI ID:1049265

Katsiev, K; Vescovo, E; Losovyj, Y; Zhou, Z; Liu, L; Dowben, P A; Goodman, D W

High-resolution photoemission illustrates that the band structure of graphene on Ru(0001) exhibits a well-defined splitting. This splitting is largest with the graphene directly on the Ru(0001) substrate, whereas with a chemisorbed oxygen spacer layer between the graphene and the metal substrate, this splitting is considerably reduced. This splitting is attributed to a combination of chemical interactions between graphene and Ru(0001) and to screening of the former by the latter, not spin-orbit coupling.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
• Sponsoring Organization: USDOE SC OFFICE OF SCIENCE (SC)
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 1049265
• Report Number(s): BNL-98222-2012-JA; 39KC02000; TRN: US201217%%599
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 85, Issue 19; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
OXYGEN
PHOTOEMISSION
SPACERS
photoemission
graphene
substrate
splitting
national synchrotron light source