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Evaluation of spin-orbit interaction at non-absorbing atoms for XMCD

Akihiro Koide

Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japan

XMCD measurements for light elements have been performed to investigate the spin state in spintronics materials such as graphene/Ni(111). Although the XMCD intensity requires spin-orbit interaction (SOI), those measurements show some XMCD intensity even for light elements, which have less SOI. In this work, SOI at non-absorbing atoms is taken into account in the present theory. The present numerical calculations show SOI in scattering process may contribute to XMCD intensity. This result might provide a way to evaluate interaction length of SOI between light elements and magnetic atoms.