Lattice disorder and density of states change of graphite surface by single ion impact

H. Ogiso, W. Mizutani, S. Nakano, H. Tokumoto, K. Yamanaka

研究成果: Article査読

17 被引用数 (Scopus)

抄録

We discuss changes in the electronic structure and the topography of the graphite surface caused by a single ion impact. Both protrusion-like regions (PLR) and the latticedisordered regions were found in scanning tunneling microscope images. In atomic force images, however, no PLRs were found, even in when lattice-disordered regions were found. To determine the change in the density of states in PLRs, tunneling current versus voltage characteristics were measured. It was found that the density of states at the Fermi level of PLRs was greater than that of the intact surface, which means that the semimetal to metal transition was caused by a single ion impact. These results indicate that PLRs may originate from the change in the density of states.

本文言語English
ページ(範囲)S1155-S1158
ジャーナルApplied Physics A: Materials Science and Processing
66
SUPPL. 1
DOI
出版ステータスPublished - 1998 12月 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)

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