TY - JOUR
T1 - Isolated and assembled silver aggregates on the Si(001) surface
T2 - The initial stage of film formation
AU - Huang, Kai
AU - Huang, Xiaohang
AU - Nogami, Jun
N1 - Publisher Copyright:
© the Owner Societies 2021.
PY - 2021/2/21
Y1 - 2021/2/21
N2 - We examined the dynamics of adsorption and the subsequent growth of submonolayered silver on Si(001) from 100 K to 230 K, using scanning tunneling microscopy and density functional theory. The dynamics is demonstrated to depend on substrate temperature, as described in the following three stages: (I) at 100-140 K, silver is adsorbed as isolated aggregates (regular-Ag4, variant-Ag4and Ag2), in the absence of single silver adatoms. The spontaneous formation of silver aggregates arises from the hot-atom motion upon the initial impingement of individual silver atoms onto the Si(001) substrate. (II) At 140-190 K, the migration of isolated Ag-aggregates is sufficiently activated, leading to the formation of Ag-chains by surface polymerization. (III) At 190-230 K, there is implication that the Ag-chains become mobile on Si(001), en route to forming patches of 2×2 Ag-films by agglomeration.
AB - We examined the dynamics of adsorption and the subsequent growth of submonolayered silver on Si(001) from 100 K to 230 K, using scanning tunneling microscopy and density functional theory. The dynamics is demonstrated to depend on substrate temperature, as described in the following three stages: (I) at 100-140 K, silver is adsorbed as isolated aggregates (regular-Ag4, variant-Ag4and Ag2), in the absence of single silver adatoms. The spontaneous formation of silver aggregates arises from the hot-atom motion upon the initial impingement of individual silver atoms onto the Si(001) substrate. (II) At 140-190 K, the migration of isolated Ag-aggregates is sufficiently activated, leading to the formation of Ag-chains by surface polymerization. (III) At 190-230 K, there is implication that the Ag-chains become mobile on Si(001), en route to forming patches of 2×2 Ag-films by agglomeration.
UR - http://www.scopus.com/inward/record.url?scp=85101687056&partnerID=8YFLogxK
U2 - 10.1039/d0cp06353c
DO - 10.1039/d0cp06353c
M3 - 文章
C2 - 33564800
AN - SCOPUS:85101687056
SN - 1463-9076
VL - 23
SP - 4161
EP - 4166
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 7
ER -