Conclusions
The calculation of the spin-orbit and the Casimir contributions are in progress, from our preliminary results we have observed the Casimir effect to be at least as large if not larger than the spin-orbit effect. This corresponds well with the atomic situation6,7. The calculation itself requires very careful analysis involving the summations over\(\mathop k\limits^ \to \), the symmetry12, and the use of the excited states, in order to arrive at definite conclusions regarding the relative importance of the three mechanisms carried over from the atom and any additional mechanisms that may be characteristic only for solid-state. It is hoped that conclusions drawn from our calculations on pure iron will be useful in applying these mechanisms to more complicated systems such as heavy atom alloys.
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Krawchuk, B.D., Ray, S.N., Das, T.P. et al. Mechanisms for electric field gradients in ferromagnetic cubic metals. Hyperfine Interact 4, 352–356 (1978). https://doi.org/10.1007/BF01021850
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DOI: https://doi.org/10.1007/BF01021850