Using an unusual arrangement of optical techniques, we studied the full azimuthal dependence of hydrogen diffusion on a 0.1°-miscut Ni(111) surface vs temperature. From such a dependence, we arrived at the conclusion that the extra energy barrier for a hydrogen adatom to cross a  step edge must be less than 60 meV or 1.5 kcal/mol.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Sep 15 1998|
ASJC Scopus subject areas
- Condensed Matter Physics