Current vs Charge Density Contributions to Nonlinear X-ray Spectroscopy.
Current vs Charge Density Contributions to Nonlinear X-ray Spectroscopy.
复制标题
电流与电荷密度对非线性 X 射线光谱的贡献。
DOI：
10.1021/acs.jctc.6b00279
复制
发表时间：
2016
影响因子：
5.5
通讯作者：
S. Mukamel
中科院分区：
文献类型：
--
作者：
J. Rouxel;M. Kowalewski;S. Mukamel
受激（相干）和自发（非相干）非线性X射线信号表示使用空间非局部响应张量，直接连接到时间演变的电流j和电荷σ密度，而不是电和磁多极。证明了σA（2）和j · A最小耦合项（A为矢势）的相对贡献。这两个占主导地位的非共振和共振散射，分别，并作出相当的贡献，在近共振失谐。
Stimulated (coherent) and spontaneous (incoherent) nonlinear X-ray signals are expressed using a spatially nonlocal response tensor which directly connects them to the time evolving current j and charge σ densities rather than to electric and magnetic multipoles. The relative contributions of the σA(2) and j · A minimal coupling terms, where A is the vector potential, are demonstrated. The two dominate off-resonant and resonant scattering, respectively, and make comparable contributions at near resonant detunings.
影响因子：
10.8
作者：
Kao, T. S.;Rogers, E. T. F.;Zheludev, N. I.
通讯作者：
Zheludev, N. I.