Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface

A. Ueno, T. Fujita, M. Matsue, H. Yanagisawa*, C. Oshima, F. Patthey, H. C. Ploigt, W. D. Schneider, S. Otani

*この研究の対応する著者

研究成果: Article査読

22 被引用数 (Scopus)

抄録

We have investigated a BC3 covered NbB2(0 0 0 1) surface using scanning tunneling microscopy (STM), scanning tunneling spectroscopy (STS), and low energy electron diffraction (LEED). The STM images reveal characteristic features of a Moiré pattern reflecting an incommensurate relation of the BC3 sheet with the substrate: bright protrusions with the periodicity of the substrate lattice are modulated in intensity with the periodicity of the BC3 lattice. As a result, the surface exhibits nm-scale patchy regions with either the √3 × √3 or the 1 × 1 structure of the substrate. The two-dimensional Fourier transformation pattern of the STM image is consistent with the LEED pattern proving the epitaxial and incommensurate relationship between BC3 surface sheet and substrate. No feature of a predicted superconducting gap was found in STS spectra measured at 5 K.

本文言語English
ページ(範囲)3518-3521
ページ数4
ジャーナルSurface Science
600
17
DOI
出版ステータスPublished - 2006 9月 1

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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