Abstract
A description is provided of experimental data for tunneling diffusion of atoms on single crystal planes as obtained using field emission-fluctuation spectroscopy. A focus is made upon the significantly weaker than anticipated isotope effect for H/W(110) tunneling diffusion and on the coverage dependence which suggests an influence of the nuclear statistics on the diffusion. A unified analysis of both the tunneling and thermally activated regions provides insight into the nature of the interactions between the adsorbed hydrogen atom and the tungsten lattice, and these interactions, in turn, provide an explanation of the observed anomolous isotope effect for diffusion of H/W(110).
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© 1986 D. Reidel Publishing Company
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Auerbach, A., Freed, K.F., Gomer, R. (1986). Tunneling in Surface Diffusion. In: Jortner, J., Pullman, B. (eds) Tunneling. The Jerusalem Symposia on Quantum Chemistry and Biochemistry, vol 19. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-4752-8_22
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DOI: https://doi.org/10.1007/978-94-009-4752-8_22
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