Quasi-collective motion of nanoscale metal strings in metal surfaces
Quasi-collective motion of nanoscale metal strings in metal surfaces
复制标题
金属表面纳米级金属弦的准集体运动
DOI:
10.1038/nmat1011
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发表时间:
2003
期刊:
影响因子:
41.2
通讯作者:
O.M. Magnussen
中科院分区:
文献类型:
--
作者:
M. Labayen;C. Ramirez;W. Schattke;O.M. Magnussen
Mass transport processes on metal surfaces play a key role in epitaxial growth and coarsening processes. They are usually described in terms of independent, statistical diffusion and attachment/detachment of individual metal adatoms or vacancies,. Here we present high-speed scanning tunnelling microscopy (video-STM) observations of the dynamic behaviour of five-atom-wide, hexagonally ordered strings of Au atoms embedded in the square lattice of the Au(100)-(1×1) surface that reveal quasi-collective lateral motion of these strings perpendicular to as well as along the string direction. The perpendicular motion can be ascribed to small atomic displacements in the strings induced by propagating kinks, which also provides a mechanism for the exchange of Au atoms between the two string ends, required for motion in string direction. In addition, quasi-one-dimensional transport of Au adatoms along the string boundaries may contribute to the latter phenomenon according to density functional calculations.
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DOI:
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发表时间:
1981
期刊:
影响因子:
--
作者:
M. Hove;R. Koestner;P. Stair;J. Bibérian;L. Kesmodel;I. Bartoš;G. Somorjai
通讯作者:
G. Somorjai
DOI:
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发表时间:
1996
期刊:
影响因子:
--
作者:
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通讯作者:
H. Metiu
影响因子:
1.9
作者:
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影响因子:
8.6
作者:
Sebastian Günther;E. Kopatzki;M. Bartelt;James W. Evans;R. J. Behm
通讯作者:
R. J. Behm
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
A. Naumovets
通讯作者:
A. Naumovets