Abstract
A quantum mechanical description of low-concentration hydrogen diffusion is presented. Using the Kubo formula for the diffusion coefficent, harmonic wave functions for the hydrogen atoms, and polaronic wave functions for the lattice, an exact expression for the diffusion coefficent can be found. Two interesting predictions of the theory are (i) a decrease in the activation energy with mass for fcc metals, in agreement with experiment, and (ii) an activated form for diffusion between localized states even in the purely tunneling regime.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.