Excitation of Hydrogen Motion inside a Nickel Vacancy
- 19 August 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 55 (8) , 852-855
- https://doi.org/10.1103/physrevlett.55.852
Abstract
By means of the ion-channeling technique, we have shown the existence of a very low-energy (∼3 meV) excitation for deuterium impurities trapped to vacancies in nickel. The excitation is associated with a change of the D location from near octahedral to near tetrahedral. On the basis of calculations of the D potentials within the effective-medium theory and the quantum treatment of the D motion, we suggest that the observed state can be regarded as an excited standing wave of a particle (D) on a sphere (internal surface around the vacancy).Keywords
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