Sum rules of L-edge x-ray magnetic circularly polarized emission for 3d transition metals
Sum rules of L-edge x-ray magnetic circularly polarized emission for 3d transition metals
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3d 过渡金属 L 边 X 射线磁圆偏振发射的求和规则
DOI：
10.1103/physrevb.104.094419
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发表时间：
2021
影响因子：
3.7
通讯作者：
Inami Toshiya
中科院分区：
文献类型：
--
作者：
Koide Akihiro;Nomura Takuji;Inami Toshiya
提出了过渡金属X射线磁圆偏振辐射（XMCPE）边的求和规则。利用入射光子和发射光子螺旋度的组合，可以分别得到自旋、轨道、磁偶极子和四极项的多分量期望值。X射线磁性圆二色性和XMCPE之间的求和规则的根本差异来自于涉及由自旋-轨道相互作用分裂的核心状态的各种电子跃迁。XMCPE中的附加电子跃迁导致自旋矩和规则关系的复杂角度依赖性。我们的研究结果促进了未来的XMCPE测量，目前还没有观察到。
We propose sum rules of x-ray magnetic circularly polarized emission (XMCPE) atedges fortransition metals. By making use of combinations of incident and emitted photon helicities,-component expectation values of spin, orbital, magnetic dipole, and quadrupole terms can be obtained separately. The fundamental difference in the sum rules between x-ray magnetic circular dichroism and XMCPE arises from the variety of electron transitions involving core states split by the spin-orbit interaction. The additional electron transition in XMCPE causes complicated angular dependence of the sum rule relation for the spin moment. Our findings promote future-edge XMCPE measurements, which have not been observed at present.