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DOE OSTI · 1982813

Quantifying Spin-Mixed States in Ferromagnets

Shaw, Justin M·Knut, Ronny·Armstrong, Abigail·Bhandary, Sumanta·Kvashnin, Yaroslav·Thonig, Danny·Delczeg-Czirjak, Erna K·Karis, Olof·Silva, T. J.·Weschke, Eugen·Nembach, Hans T·Eriksson, Olle·Arena, Dario A.
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Abstract

We quantify the presence of spin-mixed states in ferromagnetic 3D transition metals by precise measurement of the orbital moment. While central to phenomena such as Elliot-Yafet scattering, quantification of the spin-mixing parameter has hitherto been confined to theoretical calculations. We demonstrate that this information is also available by experimental means. Comparison of ferromagnetic resonance spectroscopy with x-ray magnetic circular dichroism results show that Kittel’s original derivation of the spectroscopic g factor requires modification, to include spin mixing of valence band states. Our results are supported by ab initio relativistic electronic structure theory.

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71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSPhysicselectronic structuremagnetismmagnetization dynamicsspin dynamicsspin-orbit couplingultrafast magnetization dynamics

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Shaw, Justin M, Knut, Ronny, Armstrong, Abigail, Bhandary, Sumanta, Kvashnin, Yaroslav, Thonig, Danny, Delczeg-Czirjak, Erna K, Karis, Olof, Silva, T. J., Weschke, Eugen, Nembach, Hans T, Eriksson, Olle, Arena, Dario A.. 2021-11-08. Quantifying Spin-Mixed States in Ferromagnets. https://doi.org/10.1103/physrevlett.127.207201

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