title: Stimulated diffusion of an adsorbed dimer.
abstract: 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.
authors.affiliation: Institute of Physics, National Academy of Sciences of Ukraine, 03650 Kiev, Ukraine. obraun@iop.kiev.ua
authors.forename: O M
authors.initials: OM
authors.lastname: Braun
authors.forename: R
authors.initials: R
authors.lastname: Ferrando
authors.forename: G E
authors.initials: GE
authors.lastname: Tommei