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Dynamic screening in L_2,3-shell transition metal x-ray absorption

A. L. Ankudinov·A. I. Nesvizhskii·J. J. Rehr
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Abstract

Calculations of L-shell x-ray absorption in transition metals are shown to be sensitive to screening, both of the x-ray field and the photoelectron-core hole interaction. This screening is calculated using a generalization of the time dependent local density approximation and a projection onto a local atomic basis. The approach yields renormalized dipole-matrix elements which account for the observed deviations of the L_3/L_2 branching ratio from the 2:1 value of independent electron theory.

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A. L. Ankudinov, A. I. Nesvizhskii, J. J. Rehr. 2002-03-05. Dynamic screening in L_2,3-shell transition metal x-ray absorption. https://arxiv.org/abs/cond-mat/0203097

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