Electronic structure of monolayer graphite on some transition metal carbide surfaces

A. Nagashima, K. Nuka, K. Satoh, H. Itoh, T. Ichinokawa, C. Oshima, S. Otani

研究成果: Article査読

48 被引用数 (Scopus)

抄録

It has been revealed that monolayer graphite on the (111) surfaces of transition-metal carbides differs substantially from bulk graphite in the lattice constant and the phonon dispersion, while those of monolayer graphite on the (100) surfaces are hardly modified. In this work, the electronic structure of monolayer graphite formed on TiC(111), (100), and TaC(100) surfaces has been investigated by XPS, UPS, and EELS. From the results of XPS and UPS, we have concluded that these large changes are caused not by charge transfer but mainly by orbital hybridization between the graphite overlayer and the (111) surface. This is in contrast to the case of graphite intercalation compounds. By angle-resolved EELS, in addition, we have clearly detected a two-dimensional character of the plasmons in monolayer graphite.

本文言語English
ページ(範囲)609-613
ページ数5
ジャーナルSurface Science
287-288
PART 2
DOI
出版ステータスPublished - 1993 5 10

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 凝縮系物理学
  • 表面および界面

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