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

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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
Volume600
Issue number17
DOIs
Publication statusPublished - 2006 Sep 1

Fingerprint

Scanning tunneling microscopy
scanning tunneling microscopy
Low energy electron diffraction
Substrates
periodic variations
electron diffraction
Spectroscopy
Scanning
scanning
Fourier transformation
Diffraction patterns
spectroscopy
diffraction patterns
energy

Keywords

  • 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

Cite this

Ueno, A., Fujita, T., Matsue, M., Yanagisawa, H., Oshima, C., Patthey, F., ... Otani, S. (2006). Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface. Surface Science, 600(17), 3518-3521. https://doi.org/10.1016/j.susc.2006.07.007

Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface. / Ueno, A.; Fujita, T.; Matsue, M.; Yanagisawa, H.; Oshima, C.; Patthey, F.; Ploigt, H. C.; Schneider, W. D.; Otani, S.

In: Surface Science, Vol. 600, No. 17, 01.09.2006, p. 3518-3521.

Research output: Contribution to journalArticle

Ueno, A, Fujita, T, Matsue, M, Yanagisawa, H, Oshima, C, Patthey, F, Ploigt, HC, Schneider, WD & Otani, S 2006, 'Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface', Surface Science, vol. 600, no. 17, pp. 3518-3521. https://doi.org/10.1016/j.susc.2006.07.007
Ueno A, Fujita T, Matsue M, Yanagisawa H, Oshima C, Patthey F et al. Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface. Surface Science. 2006 Sep 1;600(17):3518-3521. https://doi.org/10.1016/j.susc.2006.07.007
Ueno, A. ; Fujita, T. ; Matsue, M. ; Yanagisawa, H. ; Oshima, C. ; Patthey, F. ; Ploigt, H. C. ; Schneider, W. D. ; Otani, S. / Scanning tunneling microscopy study on a BC3 covered NbB2(0 0 0 1) surface. In: Surface Science. 2006 ; Vol. 600, No. 17. pp. 3518-3521.
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AU - Oshima, C.

AU - Patthey, F.

AU - Ploigt, H. C.

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AB - 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.

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KW - Low energy electron diffraction

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