Stimulated diffusion of an adsorbed dimer.
The mobility and the diffusivity of a dimer (two atoms coupled by an elastic spring) in a periodic substrate potential under the action of the dc and ac external forces are studied. It is shown that the dimer diffusivity may be strongly enhanced due to driving.
Braun
O M
OM
Institute of Physics, National Academy of Sciences of Ukraine, 03650 Kiev, Ukraine. obraun@iop.kiev.ua
Ferrando
R
R
Tommei
G E
GE