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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)3518-3521
Number of pages4
JournalSurface Science
Issue number17
Publication statusPublished - 2006 Sept 1


  • BC
  • Honeycomb structure
  • Low energy electron diffraction
  • Scanning tunneling microscopy
  • Scanning tunneling spectroscopy
  • Surface segregation
  • Surface structure
  • Thin film structure

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces


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