Anatomy of interfacial spin-orbit coupling in Co/Pd multilayers using X-ray magnetic circular dichroism and first-principles calculations

Scientific Reports
Jun OkabayashiHiro Munekata

Abstract

Element-specific orbital magnetic moments and their anisotropies in perpendicularly magnetised Co/Pd multilayers are investigated using Co L-edge and Pd M-edge angle-dependent x-ray magnetic circular dichroism. We show that the orbital magnetic moments in Co are anisotropic, whereas those in Pd are isotropic. The first-principles density-functional-theory calculations also suggest that the Co/Pd interfacial orbital magnetic moments in Co are anisotropic and contribute to the perpendicular magnetic anisotropy (PMA), and that the isotropic ones in Pd manipulates the Co orbitals at the interface through proximity effects. Orbital-resolved anatomy of Co/Pd interfaces reveals that the orbital moment anisotropy in Co and spin-flipped transition related to the magnetic dipoles in Pd are essential for the appearance of PMA.

References

Oct 1, 1994·Physical Review. B, Condensed Matter·G H DaalderopM F Schuurmans
Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Jul 1, 1996·Physical Review. B, Condensed Matter·K KyunoS Asano
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Jul 14, 2010·Nature Materials·S IkedaH Ohno

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Citations

Jun 18, 2020·Scientific Reports·Jun OkabayashiShigemi Mizukami

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Methods Mentioned

BETA
circular dichroism
PMA
X-ray
transmission electron microscopy
the

Software Mentioned

Vienna ab initio simulation package ( VASP )
PAW
VASP

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