HREELS, STM, and STS study of CH3-terminated Si(111)-(1×1) surface

Taro Yamada, Maki Kawai, Andrzej Wawro, Shozo Suto, Atsuo Kasuya

研究成果: Article査読

46 被引用数 (Scopus)


An ideally (1×1)-CH3(methyl)-terminated Si(111) surface was composed by Grignard reaction of photochlorinated Si(111) and the surface structure was for the first time confirmed by Auger electron spectroscopy, low energy electron diffraction, high-resolution electron energy loss spectroscopy (HREELS), scanning tunneling microscopy (STM), and scanning tunneling spectroscopy (STS). HREELS revealed the vibration modes associated to the CH3-group as well as the C-Si bond. STM discerned an adlattice with (1×1) periodicity on Si(111) composed of protrusions with internal features, covering all surface terraces. The surface structure was confirmed to be stable at temperatures below 600 K. STS showed that an occupied-state band exists at gap voltage of - 1.57 eV, generated by the surface CH3 adlattice. This CH3:Si(111)-(1×1) adlayer with high stability and unique electronic property is prospective for applications such as nanoscale lithography and advanced electrochemistry.

ジャーナルJournal of Chemical Physics
出版ステータスPublished - 2004 12 1

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学


「HREELS, STM, and STS study of CH<sub>3</sub>-terminated Si(111)-(1×1) surface」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。