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Atomistic morphology and structure of Si(001) surface exposed to ethylene at room temperature have been studied by scanning tunneling microscopy (STM) and photoelectron diffraction (PED). At an ethylene coverage (θ C ) of ~0.5 monolayer (ML, carbon atom/surface Si-atom), both p(2x2) and c(4x2) structures were clearly resolved in atomistic STM images. The alignments of chemisorbed ethylene...
Particle desorption is investigated in terms of bombardment of a GaAs surface by slow multiply charged Ar ions (charge state q 9, kinetic energy E k 3 keV). The desorption yield of Ga and As atoms as well as H + ions drastically increased with the charge state of the incident Ar ions, but was changed little by the kinetic energy of the Ar ions. These results demonstrate that desorption...
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