K边共振非弹性X射线散射中的晶格耦合和Franck-Condon效应
Lattice coupling and Franck-Condon effects in K-edge resonant inelastic X-ray scattering
摘要：
我们讨论了最近的铜K-边共振非弹性散射（RIXS）的结果CuB 2 O 4，模型系统组成的电子隔离的CuO 4斑块，表现出异常的入射光子能量的依赖性，不被捕获的电子只有模型。我们表明，这些异常的功能，可以定性地描述扩展的电子只考虑到包括晶格自由度。我们的研究结果具有重要的一般意义的K-边缘RIXS结果的解释电子高维过渡金属氧化物。
英文摘要：
We discuss recent Cu K-edge resonant inelastic scattering (RIXS) results for CuB2O4, a model system consisting of electronically-isolated CuO4 plaquettes, which exhibits anomalies in the incident photon energy dependence that are not captured by electron-only models. We show that these anomalous features can be qualitatively described by extending the electron-only considerations to include the lattice degrees of freedom. Our findings have important general implications for the interpretation of K-edge RIXS results for electronically higher-dimensional transition metal oxides.
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