抄録
The initial stage of oxygen adsorption onto a Si(111)-7×7 surface has been studied by scanning tunneling microscopy. The substrate was exposed to oxygen under a partial pressure of 1× 10-9 Torr at room temperature during the observation. Dark features, which have been reported as a main channel for oxidation, appeared exclusively in the faulted halves of the DAS structure though bright features appeared in both halves. This difference can be explained by the adsorption site of oxygen. That is, the greater energy difference of the dangling-bonds of adatoms between both halves than that of the back-bonds causes the exclusive appearance of the dark feature, which has an oxygen atom on on-top site in addition to the other in the back-bond.
| 元の言語 | English |
|---|---|
| ジャーナル | Surface Science |
| 巻 | 312 |
| 発行部数 | 1-2 |
| DOI | |
| 出版物ステータス | Published - 1994 6 1 |
| 外部発表 | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Condensed Matter Physics
- Surfaces and Interfaces
これを引用
Initial stages of oxygen adsorption onto a Si(111)-7×7 surface studied by STM. / Hasegawa, Tsuyoshi; Kohno, Makiko; Hosaka, Sumio; Hosoki, Shigeyuki.
：: Surface Science, 巻 312, 番号 1-2, 01.06.1994.研究成果: Article
}
TY - JOUR
T1 - Initial stages of oxygen adsorption onto a Si(111)-7×7 surface studied by STM
AU - Hasegawa, Tsuyoshi
AU - Kohno, Makiko
AU - Hosaka, Sumio
AU - Hosoki, Shigeyuki
PY - 1994/6/1
Y1 - 1994/6/1
N2 - The initial stage of oxygen adsorption onto a Si(111)-7×7 surface has been studied by scanning tunneling microscopy. The substrate was exposed to oxygen under a partial pressure of 1× 10-9 Torr at room temperature during the observation. Dark features, which have been reported as a main channel for oxidation, appeared exclusively in the faulted halves of the DAS structure though bright features appeared in both halves. This difference can be explained by the adsorption site of oxygen. That is, the greater energy difference of the dangling-bonds of adatoms between both halves than that of the back-bonds causes the exclusive appearance of the dark feature, which has an oxygen atom on on-top site in addition to the other in the back-bond.
AB - The initial stage of oxygen adsorption onto a Si(111)-7×7 surface has been studied by scanning tunneling microscopy. The substrate was exposed to oxygen under a partial pressure of 1× 10-9 Torr at room temperature during the observation. Dark features, which have been reported as a main channel for oxidation, appeared exclusively in the faulted halves of the DAS structure though bright features appeared in both halves. This difference can be explained by the adsorption site of oxygen. That is, the greater energy difference of the dangling-bonds of adatoms between both halves than that of the back-bonds causes the exclusive appearance of the dark feature, which has an oxygen atom on on-top site in addition to the other in the back-bond.
UR - http://www.scopus.com/inward/record.url?scp=0028447546&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0028447546&partnerID=8YFLogxK
U2 - 10.1016/0039-6028(94)90796-X
DO - 10.1016/0039-6028(94)90796-X
M3 - Article
AN - SCOPUS:0028447546
VL - 312
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 1-2
ER -