Abstract
The diffusion rate of light interstitials is calculated avoiding the usual adiabatic and Condon approximations for the phonons. The method employed is a generalization of the standard small polaron theory taking explicitely account of the strongly coupled interstitial-host vibrations.
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Schober, H.R., Stoneham, A.M. Quantum diffusion of light interstitials. Hyperfine Interact 31, 141–146 (1986). https://doi.org/10.1007/BF02401551
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DOI: https://doi.org/10.1007/BF02401551