Motion of interstitials in metals: Quantum tunneling at low temperatures
- 15 August 1982
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 26 (4) , 1819-1828
- https://doi.org/10.1103/physrevb.26.1819
Abstract
Tunneling rates for heavy-impurity interstitials in fcc metals are calculated. The full interstitial—host-lattice coupling is taken into account in the dynamics as well as in the lattice relaxation. It is shown that resonant modes play a decisive role in tunneling. The results of this full dynamical study are compared to simple one-dimensional models, from which it appears that the one-dimensional approximation can be used to extrapolate to different values of mass, jump distance, and classical activation energy. The method can be extended to study the finite-temperature behavior, and we indicate how this can be done.Keywords
This publication has 17 references indexed in Scilit:
- TUNNELING OF MIXED DUMBBELLS IN Al-ZnLe Journal de Physique Colloques, 1981
- Determination of Interstitial Sites for Localized Diffusion from Interference of MössbauerRadiationPhysical Review Letters, 1980
- Role of quantum mechanisms and thermal heating in low-temperature creep of metalsPhysica Status Solidi (a), 1980
- Quantum Effects in the Plasticity of CrystalsPhysica Status Solidi (b), 1980
- Interstitial-solute complexes in an irradiated Al-Fe alloyJournal of Physics F: Metal Physics, 1978
- Lattice theory of point defectsJournal of Nuclear Materials, 1978
- Interstitial atom clustering at57Co impurity atoms in aluminium after electron and neutron irradiationRadiation Effects, 1978
- Unusual Dynamical Properties of Self-Interstitials Trapped at Co Impurities in AlPhysical Review Letters, 1976
- Direct Evidence for Interstitial-Atom Trapping byImpurities in Aluminum from Mössbauer-Effect Measurements after Low-Temperature Neutron IrradiationPhysical Review Letters, 1973
- LVII. Creep in metal crystals at very low temperaturesPhilosophical Magazine, 1956