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

Khabibulakh Katsiev, Yaroslav Losovyj, Zihao Zhou, Elio Vescovo, Li Liu, Peter A. Dowben, and D. Wayne Goodman
Phys. Rev. B 85, 195405 – Published 3 May 2012
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Abstract

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.

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  • Received 23 September 2011

DOI:https://doi.org/10.1103/PhysRevB.85.195405

©2012 American Physical Society

Authors & Affiliations

Khabibulakh Katsiev1, Yaroslav Losovyj2, Zihao Zhou1, Elio Vescovo3, Li Liu1, Peter A. Dowben4, and D. Wayne Goodman1,*

  • 1Department of Chemistry, Texas A&M University, College Station, Texas 77842, USA
  • 2The J. Bennett Johnston Sr. Center for Advanced Microstructures and Devices, Louisiana State University, 6980 Jefferson Highway, Baton Rouge, Louisiana 70806, USA
  • 3National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 4Department of Physics and Astronomy, University of Nebraska, Theodore Jorgensen Hall, 855 North 16th Street, P.O. Box 880299, Lincoln, Nebraska 68588-0299, USA

  • *deceased. Emails to Dr. Goodman (goodman@mail.chem.tamu.edu) will be read.

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Issue

Vol. 85, Iss. 19 — 15 May 2012

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