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arXiv 1106.0640cond-mat.str-el
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共振非弹性X射线散射的有效跃迁算符

Effective transition operators for resonant inelastic X-ray scattering

Michel van Veenendaal

摘要:

推导出共振非弹性X射线散射(RIXS)的有效基于对称性的跃迁算符,表明不同状态之间的散射如何取决于入射和出射X射线的偏振。在球对称中,有效算符可以用自旋算符来重写,尽管表达式取决于基态的性质。对于较低对称性,晶场和自旋轨道相互作用的联合作用打破了自旋空间,自旋算符不再是合适的算符。以铱化合物为例,证明了仍然可以得到有效的散射算符。这些有效的过渡算子有助于我们理解RIXS如何耦合到基元激发。

英文摘要:

Effective symmetry-based transition operators for resonant inelastic X-ray scattering (RIXS) are derived that show how the scattering between different states depends on the polarization of the incoming and outgoing X-rays. In spherical symmetry, the effective operators can be rewritten in terms of spin operators, although the expressions depend on the nature of the ground state. For lower symmetries, the combined action of the crystal field and the spin-orbit interaction breaks up the spin space and spin operators are no longer appropiate operators. By taking iridium compounds as an example, it is demonstrated that effective scattering operators can still be obtained. These effective transition operators facilitate our understanding how RIXS couples to elementary excitations.

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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