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首页> 外文期刊>Physica, B. Condensed Matter >Electronic structure of complex copper systems probed by resonant inelastic X-ray scattering at Cu L-3 edge
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Electronic structure of complex copper systems probed by resonant inelastic X-ray scattering at Cu L-3 edge

机译:Cu L-3边缘共振非弹性X射线散射探测复杂铜系统的电子结构

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摘要

We have used X-ray absorption (XA) and resonant inelastic X-ray scattering (RIXS) spectroscopies to study a series of copper compounds, namely Cu2O, CuO, Cu(OH)(2), CuCl2, Cu2S, CuSO4, malachite (Cu-2(CO3)(2)(OH)(2)) and atacamite (CuCl2 center dot 3Cu(OH)(2)). Cu 2p XA spectra provide information about oxidation states. Divalent copper gives a single narrow line due to excitations into the empty 3d state, whereas monovalent copper gives a broad band at higher energy due to transitions to 4s states. Chemical shifts of the main line in the Cu2+ XA spectra of different compounds are observed but in some cases they are too small to make a clear distinction between the species. It is shown that RIXS at the Cu 2p edge has a great potential to distinguish between the species due to large differences in spectral shapes for the same energy of the incident photon beam. First evidence for the possibility of detecting chemical composition of copper compounds is presented and discussed in details.
机译:我们已经使用X射线吸收(XA)和共振非弹性X射线散射(RIXS)光谱学研究了一系列铜化合物,即Cu2O,CuO,Cu(OH)(2),CuCl2,Cu2S,CuSO4,孔雀石( Cu-2(CO3)(2)(OH)(2))和方沸石(CuCl2中心点3Cu(OH)(2))。 Cu 2p XA光谱提供有关氧化态的信息。由于激发到空的3d状态,二价铜给出一条窄线,而由于转变为4s状态,一价铜在较高能量下给出宽带。观察到了不同化合物在Cu2 + XA光谱中主线的化学位移,但在某些情况下,它们的化学位移过小,无法在物质之间进行明显区分。结果表明,由于入射光子束的相同能量的光谱形状差异很大,Cu 2p边缘的RIXS具有很大的区分物种的潜力。提出并详细讨论了检测铜化合物化学成分可能性的第一个证据。

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