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Continuum Charge Excitations in High-Valence Transition-Metal Oxides Revealed by Resonant Inelastic X-Ray Scattering
被引:25
作者:
Hariki, Atsushi
[1
]
Winder, Mathias
[1
]
Kunes, Jan
[1
,2
]
机构:
[1] TU Wien, Inst Solid State Phys, A-1040 Vienna, Austria
[2] Czech Acad Sci, Inst Phys, Slovance 2, Prague 18221 8, Czech Republic
基金:
欧洲研究理事会;
关键词:
ELECTRONIC-STRUCTURE;
LACUO3;
PHOTOABSORPTION;
CRYSTAL;
NIO;
D O I:
10.1103/PhysRevLett.121.126403
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
We present a theoretical investigation of the origin of Raman-like and fluorescencelike (FL) features of resonant inelastic x-ray scattering (RIXS) spectra. Using a combination of local-density approximation + dynamical mean-field theory and a configuration interaction solver for Anderson impurity model, we calculate the L-edge RIXS and x-ray absorption spectra of high-valence transition-metal oxides LaCuO3 and NaCuO2. We analyze in detail the behavior of the FL feature and show how it is connected to the details of electronic and crystal structure. On the studied compounds we demonstrate how material details determine whether the electron-hole continuum can be excited in the L-edge RIXS process.
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页数:6
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