Momentum Dependence of the Dynamic Structure Factor of Core Electrons in Metallic Lithium

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  • Arimitsu Naoko
    Division of Electrical and Computer Engineering, Faculty of Engineering, Yokohama National University
  • Kobayashi Yukio
    Institute of Physics, College of Arts and Sciences, University of Tokyo
  • Mizuno Yukio
    Institute of Physics, College of Arts and Sciences, University of Tokyo

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  • Momentum Dependence of the Dynamic Stru

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Abstract

The dynamic structure factor of the core electrons in metallic lithium, Sc(q, ω), is calculated in a unified way on the basis of both the one-electron and the one-site approximation. The aim is to furnish the first theoretical data which covers the whole range of q and ω. The results are analysed from several angles. It is found that the Compton-to-Raman transition occurs gradually with decreasing q on the interval 1.5\gtrsimqa\gtrsim0.2, a being the orbital radius of core electrons. Experimental studies of Sc(q, ω) in this transition region are expected to provide us with new information on the excitation of core electrons.

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