Far-ranged transient motion of “hot” oxygen atoms upon dissociation

Schintke, Silvia (Université de Lausanne (UNIL), Lausanne, Switzerland) ; Messerli, Stéphane (Université de Lausanne (UNIL), Lausanne, Switzerland) ; Morgenstern, Karina (FU Berlin, Berlin, Germany ; Université de Lausanne (UNIL), Lausanne, Switzerland) ; Nieminen, Jouko (Tampere University of Technology, Tampere, Finland) ; Schneider, Wolf-Dieter (Université de Lausanne (UNIL), Lausanne, Switzerland)

Scanning tunneling microscopy at low temperature reveals that upon dissociative adsorption of oxygen on Ag(001) “hot” adatoms have separated in a far-ranged transient motion to two different intrapair distances around 2 and 4 nm, corresponding to 7 and 14 surface lattice constants, respectively. Manipulation experiments on oxygen atoms displaying different contrasts in the images and model calculations suggest that the transient motion ends up not only in the stable fourfold hollow site but also in two metastable sites.


Note: SCHINTKE, Silvia est une chercheuse à la HES-SO, HEIG-VD, depuis 2002.


Article Type:
scientifique
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
COMATEC - Institut de Conception, Matériaux, Emballage & Conditionnement
Date:
2001-02
Pagination:
4 p.
Published in:
The Journal of Chemical Physics
Numeration (vol. no.):
2001, vol. 114, pp. 4206-4209
DOI:
ISSN:
0021-9606
Appears in Collection:



 Record created 2021-02-12, last modified 2021-02-19


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