Combinatorial Scanning Tunneling Microscopy Study of Cr Deposited on Anatase TiO2(001) Surface

T. Ohsawa, Y. Yamamoto, M. Sumiya, Y. Matsumoto, H. Koinuma

研究成果: Article査読

14 被引用数 (Scopus)


We have investigated Cr deposited on anatase TiO2(001) surfaces using a combinatorial approach. Anatase TiO2(001) thin films covered with Cr metals were prepared on a Nb-doped SrTiO3(001) substrate by combinatorial laser molecular beam epitaxy and characterized by in situ low-energy electron diffraction and ultrahigh vacuum (UHV) scanning tunneling microscopy (STM). STM images of a clean TiO2(001) surface showed that one-dimensional structures along the [100] and [010] directions were formed, resulting in a (1 × 4) surface reconstruction. When Cr atoms were deposited on the anatase TiO2 surface and the films were annealed at 900 K in UHV, the one-dimensional structures became branched and showed short-range disorder. The observed surface structural disordering will be discussed in terms of the lattice strain induced by the Cr atoms diffused into the bulk.

出版ステータスPublished - 2004 4 13

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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