Title

Electron elastic scattering off a spin-polarized Cr atom

Document Type

Article

Publication Date

9-30-2014

Abstract

© 2014 American Physical Society. Electron elastic scattering off a spin-polarized Cr(...3d54s1, 7S) atom is theoretically studied in the region of electron energies up to 15 eV using both a one-electron "spin-polarized" Hartree-Fock approximation and a 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 3d5 and 4s1 subshells in the Cr 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 the e-+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.

Publication Title

Physical Review A - Atomic, Molecular, and Optical Physics

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