Publication: Oscillatory behavior of interlayer Dzyaloshinskii-Moriya interaction by spacer thickness variation
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Date
2024-04-01
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Abstract
The interlayer Dzyaloshinskii-Moriya interaction (IL-DMI) has recently emerged as an ingredient promoting chiral orthogonal coupling between adjacent magnetic layers in multilayered systems. IL-DMI offers an additional tuning knob to engineer the magnetic behavior in spintronic devices, which could be useful for nonvolatile logic and memory technologies. Here, we systematically study, via first-principles calculations and the three-site Fert-Lévy model, the spacer thickness dependence of the IL-DMI between an out-of-plane ferrimagnet TbCo and an in-plane ferromagnet Co through Pt, Ir, Pd, and Ru. We observed a damped oscillatory behavior with increasing spacer thickness in all cases with characteristic amplitude and periodicity. Furthermore, we established a direct correlation between the IL-DMI and density of states of bottom and top Co atoms, dominated by the spacer thickness, which is attributed to a hybridization of electronic orbitals. Based on this compelling evidence, we propose that the electronic orbital hybridization contributes to the microscopic origin of the IL-DMI metallic magnetic multilayers. We anticipate that our results will provide insights into the understanding and precise control of IL-DMI in a wide range of materials and spintronic device concepts.
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Fizik, Yoğun Madde 1:Yapısal, Mekanik ve Termal Özellikler, Temel Bilimler, Physics, Condensed Matter 1: Structural, Mechanical and Thermal Properties, Natural Sciences, Temel Bilimler (SCI), FİZİK, YOĞUN MADDE, Natural Sciences (SCI), PHYSICS, PHYSICS, CONDENSED MATTER, Elektronik, Optik ve Manyetik Malzemeler, Fizik Bilimleri, Yoğun Madde Fiziği, Electronic, Optical and Magnetic Materials, Physical Sciences, Condensed Matter Physics
Citation
Demiroglu E., Hancioglu K., YAVUZ İ., Avci C., DEĞER C., "Oscillatory behavior of interlayer Dzyaloshinskii-Moriya interaction by spacer thickness variation", Physical Review B, cilt.109, sa.14, 2024