Understanding the Enhancement of Surface Diffusivity by Dimerization.
Understanding the Enhancement of Surface Diffusivity by Dimerization.
复制标题
了解二聚化增强表面扩散率
DOI:
10.1103/physrevlett.121.185901
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发表时间:
2018
影响因子:
8.6
通讯作者:
Morgenstern
中科院分区:
文献类型:
--
作者:
Morgenstern
Beyond dilute coverage, the collective diffusion of molecules might enhance material transport. We reveal an enhanced mobility of molecular dimers by separating two motions, diffusion and rotation, of CO dimers on elemental Ag(100) as well as on a dilute Cu alloy of Ag(100). From time-lapsed scanning tunneling microscopy movies recorded between 15 and 25 K, we determine the activation energy of dimer diffusion on elemental Ag(100) to be, at, considerably smaller than the one for monomer diffusion, at. The alloyed Cu atoms reduce the dimer mobility facilitating to determine their rotational barrier separately to be. Disentangling different degrees of freedom suggests that a rotational motion is at the origin of enhanced dimer diffusivity.
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影响因子:
3.7
作者:
Agnes Beichert;Christopher Zaum;Karina Morgenstern
通讯作者:
Karina Morgenstern
影响因子:
8.6
作者:
Christopher Zaum;Kastur M. Meyer-auf-der-Heide;Michael Mehlhorn;Steve McDonough;William F. Schneider;Karina Morgenstern
通讯作者:
Karina Morgenstern
DOI:
--
发表时间:
2004
期刊:
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences
影响因子:
--
作者:
M. Persson
通讯作者:
M. Persson
影响因子:
8.6
作者:
C. Zaum;M. Rieger;K. Reuter;K. Morgenstern
通讯作者:
K. Morgenstern
DOI:
10.1017/cbo9780511730320
发表时间:
2010-07
期刊:
--
影响因子:
--
作者:
G. Antczak;G. Ehrlich
通讯作者:
G. Antczak;G. Ehrlich