A p(2×3) Ni(110)-N surface was studied by scanning tunneling microscopy. A coupled string overlays on the three Ni rows in the [11¯0] direction on the Ni(110) surface, and the line is resolved in atomic periodicity of 2.5 Å distance along the [11¯0] direction. These atomic structures correspond to the p(2×3) Ni(110)-N surface. The sites for N and/or Ni atoms were deduced by using a guide of the (-Ni-O-) chains on the Ni(110) surface, which suggests that the N atoms are on the threefold sites with two Ni atoms and one subsurface Ni atom. When a p(2×3) Ni(110)-N surface is exposed to H atoms, a bright dumbbell-shape pattern appeared at the terminal edge of the (Ni-N) domains, which may correspond to the formation of NH species. Based on these results, a structure model was proposed, which model is in good agreement with the experimental results of surface-extended x-ray-absorption fine structure and low-energy impact-collision ion-scattering spectroscopy.
|Number of pages||5|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 1996 Jan 1|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics