首页|A Composite Ansatz for Calculation of Dynamical Structure Factor
A Composite Ansatz for Calculation of Dynamical Structure Factor
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We propose an ansatz without adjustable parameters for the calculation of a dynamical structure factor.The ansatz combines the quasi-particle Green's function,especially the contribution from the renormalization factor,and the exchange-correlation kernel from time-dependent density functional theory together,verified for typical metals and semiconductors from a plasmon excitation regime to the Compton scattering regime.It has the capability to reconcile both small-angle and large-angle inelastic x-ray scattering(IXS)signals with much-improved accuracy,which can be used as the theoretical base model,in inversely inferring electronic structures of condensed matter from IXS experimental signals directly.It may also be used to diagnose thermal parameters,such as temperature and density,of dense plasmas in x-ray Thomson scattering experiments.
张玉佩、莫崇杰、张平、康炜
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HEDPS,Center for Applied Physics and Technology,and School of Physics,Peking University,Beijing 100871,China
Beijing Computational Science Research Center,Beijing 100193,China
Institute of Applied Physics and Computational Mathematics,Beijing 100088,China
HEDPS,Center for Applied Physics and Technology,and College of Engineering,Peking University,Beijing 100871,China
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国家自然科学基金国家自然科学基金国家自然科学基金Laboratory Youth Fund of Institute of Applied Physics and Computational Mathematics
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