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arXiv · 1407.4493

Electron elastic scattering off a spin-polarized Cr atom

V. K. Dolmatov·M. Ya. Amusia·L. V. Chernysheva
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Abstract

Electron elastic scattering off a spin-polarized Cr(...$3d^{5}4s^{1}$, $^{7}S$) atom is theoretically studied in the region of electron energies up to $15$ eV using both a one-electron "spin-polarized" Hartree-Fock and multielectron "spin-polarized" random phase approximation with exchange. It is found that scattering phase shifts of oppositely spin-polarized incoming electrons and corresponding cross sections of the scattering reactions significantly differ from each other, in general, even without accounting for spin-orbit interaction. This is shown to be associated with the presence of two semifilled $3d^{5}$ and $4s^{1}$ subshells in the Cr's configuration which induce considerably different exchange in the interaction of oppositely spin-polarized incoming electrons with the atom-target. The importance of electron correlation in $e^{-}+\rm Cr$ elastic scattering process is revealed. Moreover, correlation is shown to induce strong differences between scattering of oppositely spin-polarized electrons off Cr. A physically transparent interpretation for the latter is provided.

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V. K. Dolmatov, M. Ya. Amusia, L. V. Chernysheva. 2014-07-16. Electron elastic scattering off a spin-polarized Cr atom. https://doi.org/10.1103/physreva.90.032717

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