Surface diffusion of hydrogen on Ni(100): An experimental observation of quantum tunneling diffusion
- 23 March 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 68 (12) , 1862-1865
- https://doi.org/10.1103/physrevlett.68.1862
Abstract
We studied the surface diffusion of hydrogen on Ni(100) by linearly diffracting a probe laser beam from a monolayer grating of adsorbed hydrogen. In the temperature range from 110 to 161 K the Arrhenius plot shows a significant leveling off of the diffusion coefficient D(T) at around 144 K. Such a deviation from the behavior of thermally activated diffusion suggests the onset of quantum tunneling diffusion.Keywords
This publication has 16 references indexed in Scilit:
- Diffusion of 1H and 2H on the Ni(111) and (100) planesSurface Science, 1991
- Diffusion anisotropy of hydrogen and deuterium on the tungsten (211) planeSurface Science, 1988
- Anomalous isotope dependence of hydrogen diffusion rates on tungsten (110) surfaces: Implications for lattice–hydrogen interactionsThe Journal of Chemical Physics, 1987
- Diffusion of hydrogen, deuterium, and tritium on the (110) plane of tungstenThe Journal of Chemical Physics, 1985
- The question of classical localization A theory of white paint?Philosophical Magazine Part B, 1985
- Disordered electronic systemsReviews of Modern Physics, 1985
- Diffusion of hydrogen and deuterium on the (111) plane of tungstenSurface Science, 1984
- Quantum Motion of Chemisorbed Hydrogen on Ni SurfacesPhysical Review Letters, 1983
- Muon diffusion and trapping in aluminum and dilute aluminum alloys: Experiments and comparison with small-polaron theoryPhysical Review B, 1982
- Diffusion of hydrogen and deuterium on the (110) plane of tungstenPhysical Review B, 1982