Excitation pathways in resonant inelastic x-ray scattering of solids

被引：10

作者：

Vorwerk, Christian ^{[1
,2
,3
]}

Sottile, Francesco ^{[3
,4
]}

Draxl, Claudia ^{[1
,2
,3
]}

机构：

[1] Humboldt Univ, Phys Dept, D-10099 Berlin, Germany

[2] Humboldt Univ, IRIS Adlershof, D-10099 Berlin, Germany

[3] European Theoret Spect Facil ETSF, Rome, Italy

[4] Ecole Polytech, LSI, CNRS, CEA,Inst Polytech Paris, F-91128 Palaiseau, France

来源：

PHYSICAL REVIEW RESEARCH | 2020年 / 2卷 / 04期

关键词：

AB-INITIO CALCULATIONS; QUASI-PARTICLE; BAND-STRUCTURE; ABSORPTION; SPECTRUM; EDGE; SEMICONDUCTORS; EMISSION;

D O I：

10.1103/PhysRevResearch.2.042003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Resonant inelastic x-ray scattering (RIXS) is a powerful spectroscopic technique that offers an elemental- and orbital-selective probe of the electronic excitations over a huge energy range. We present a many-body approach to determine RIXS spectra in solids, yielding an intuitive expression for the RIXS cross section in terms of pathways between intermediate many-body states containing a core hole, and final many-body states containing a valence hole. Explicit excited many-body states are obtained from the diagonalization of the Bethe-Salpeter equation in an all-electron framework. For the paradigmatic example of the fluorine K edge of LiF, we show how the excitation pathways determine the spectral shape of the emission, and demonstrate the nontrivial role of electron-hole correlation in the RIXS

引用

页数：5

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