Temperature effect as an essential factor in scanning tunneling microscopy studies demonstrated by the analysis of an oxygen-adsorbed Si(111)-7 X 7 surface [50]

Yasuaki Konishi, Shoji Yoshida, Yasuyuki Sainoo, Osamu Takeuchi, Hidemi Shigekawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The very initial oxidation of a Si(111)-7 X 7 surface was studied by scanning tunneling microscopy (STM). The bias-dependent STM images of Si(111)-7 X 7 surfaces with oxygen adsorbed at RT, 80 and 5 K were compared by observing them at (RT and 80 K), (80 and 5 K) and 5 K, respectively. An essential influence of the measurement conditions on the STM images was clearly demonstrated. Through the experiment, the B-site state, which was defined as having a brighter site than that of normal adatoms, was found to have two different structures at each adsorption site. The recently identified precursor state was shown to change into the well-distinguished B sites, and its thermal activation was also confirmed.

Original languageEnglish
Article number165302
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number16
DOIs
Publication statusPublished - 2004 Oct 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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