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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2015

Explaining the x-ray nonlinear susceptibility of diamond and silicon near absorption edges

B Barbiellini
  • Fonction : Auteur
Yves Joly

Résumé

We report the observation and the theoretical explanation of the parametric down-conversion nonlinear susceptibility at the K-absorption edge of diamond and at the L 23-absorption edge of a silicon crystal. Using arguments similar to those invoked to successfully predict resonant inelastic x-ray spectra, we derive an expression for the renormalization term of the nonlinear susceptibility at the x-ray edges, which can be evaluated by using first-principles calculations of the atomic scattering factor f 1. Our model is shown to reproduce the observed enhancement of the parametric down-conversion at the diamond K and the Si L 23 edges rather than the suppression previously claimed.
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Dates et versions

hal-01215373 , version 1 (14-10-2015)

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B Barbiellini, Yves Joly, Kenji Tamasaku. Explaining the x-ray nonlinear susceptibility of diamond and silicon near absorption edges. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2015, 92 (15), pp.155119. ⟨10.1103/PhysRevB.92.155119⟩. ⟨hal-01215373⟩

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