@article{oai:repo.qst.go.jp:00083411,
 author = {Akihiro, Koide and Takuji, Nomura and Toshiya, Inami and Akihiro, Koide and Takuji, Nomura and Toshiya, Inami},
 issue = {9},
 journal = {Physical Review B},
 month = {Sep},
 note = {We propose sum rules of x-ray magnetic circularly polarized emission (XMCPE) at L edges for 3d transition metals. By making use of combinations of incident and emitted photon helicities, z-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 L-edge XMCPE measurements, which have not been observed at present},
 title = {Sum rules of L-edge x-ray magnetic circularly polarized emission for 3d transition metals},
 volume = {104},
 year = {2021}
}