Orbital excitation in Sr2CuO2Cl2: Resonant inelastic x-ray scattering at the Cu K pre-edge

被引：4

作者：

Kim, Jungho ^{[1
,2
]}

Ellis, D. S. ^{[2
]}

Gog, T. ^{[1
]}

Casa, D. ^{[1
]}

Kim, Young-June ^{[2
]}

机构：

[1] Argonne Natl Lab, Adv Photon Source, XOR, Argonne, IL 60439 USA

[2] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

SPECTRA; DEPENDENCE;

D O I：

10.1103/PhysRevB.81.073109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report resonant inelastic x-ray scattering (RIXS) study of d-d orbital excitations in Sr2CuO2Cl2 utilizing the intermediate state associated with a quadrupole transition. Fourfold azimuthal angle dependence of the pre-edge peak near the Cu K absorption edge confirms that the in-plane pre-edge peak arises from the 1s -> 3d(x2-y2) electric quadrupole transition. When the incident photon energy is tuned to this transition, we observed a RIXS excitation at 2 eV energy loss. This excitation is associated with the d-d excitation of d(x2-y2) -> d(yz,zx) based on the angular dependence of the quadrupole transition-matrix element of the scattered photon.

引用

页数：4

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