Abstract
Atomic-resolution imaging of a GaAs(110) surface with an ultrahigh-vacuum atomic force microscope (UHV-AFM) was performed for the very first time. We also observed that the rectangular lattice of the surface is atomically destroyed by sequential scanning. This atomic destruction might be due to the vertical loading force of the probing tip. Furthermore, we observed that the rows of atomic protrusions along the [11̄0] direction were slightly in zigzag, and might be interpreted as quasi-one-dimensional zigzag chains consisting of alternating Ga and As atoms on the GaAs(110). These results suggest that the UHV-AFM has the potential for investigating semiconductor surfaces with dangling bonds on an atomic scale.
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