Cu-O network-dependent core-hole screening in low-dimensional cuprates: A theoretical analysis

Article

关键词: LEVEL PHOTOEMISSION SPECTRA;    X-RAY-PHOTOEMISSION;    ELECTRONIC-STRUCTURE;    LINE-SHAPES;    INCOMPLETE SHELL;    OPTICAL-SPECTRA;    CE COMPOUNDS;    MODEL;    SR2CUO2CL2;    PHOTOELECTRON;   

DOI  :  10.1103/PhysRevB.61.13473

来源: SCIE

【 摘 要 】

We analyze the influence of the dimensionality on the Cu2p(3/2) core level x-ray photoemission spectra of undoped cuprates. Both exchange splitting and delocalization properties are described within one framework using a multiband Hubbard model. The spectral intensity is calculated by means of the Mori-Zwanzig projection technique for a CuO4, plaquette (zero-dimensional), an infinite CuO3 chain (one-dimensional), and an infinite CuO2 plane (two-dimensional). The results are compared to the spectra of Bi2CuO4,Sr2CuO3, and Sr2CuO2Cl2 Our analysis allows to distinguish between effects of the Cu-O geometry and effects from material-specific properties.

【 授权许可】

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