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arXiv 0805.4641cond-mat.mtrl-sci
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共振X射线发射光谱研究ZnO的能带结构

Band structure of ZnO from resonant x-ray emission spectroscopy

A. R. H. Preston, B. J. Ruck, L. F. J. Piper, A. DeMasi, K. E. Smith, A. Schleife, F. Fuchs, F. Bechstedt, J. Chai, S. M. Durbin

摘要:

利用软X射线发射谱和O K边吸收谱研究了纤锌矿ZnO(0001)的电子结构。在GW近似下计算的准粒子能带结构与实验数据吻合得很好,特别是与Zn 3d-O 2 p杂化态的能量位置和吸收光谱的各向异性有关.能带结构中的色散使用共振X射线发射光谱的相干k-选择部分来映射。我们表明,更广泛的映射的频带是可能的情况下,晶体各向异性,如发现在ZnO。

英文摘要:

Soft x-ray emission and absorption spectroscopy of the O K-edge are employed to investigate the electronic structure of wurtzite ZnO(0001). A quasiparticle band structure calculated within the GW approximation agrees well with the data, most notably with the energetic location of the Zn3d - O2p hybridized state and the anisotropy of the absorption spectra. Dispersion in the band structure is mapped using the coherent k-selective part of the resonant x-ray emission spectra. We show that a more extensive mapping of the bands is possible in the case of crystalline anisotropy such as that found in ZnO.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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