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The enhancement of ...
The enhancement of low-temperature excitation of magnons via interlayer exchange coupling in perpendicularly magnetized [Co/Pd] multilayers
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Kasiuk, Julia (author)
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Wu, Wen-Bin (author)
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Przewoznik, Janusz (author)
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Kapusta, Czeslaw (author)
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Svito, Ivan (author)
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Nguyen, Thanh Huong (author)
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Do, Khanh Tung (author)
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Tran, Dang Thanh (author)
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Do, Hung Manh (author)
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- Åkerman, Johan, 1970 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Nguyen, Thi Ngoc Anh (author)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: APPLIED PHYSICS LETTERS. - 0003-6951 .- 1077-3118. ; 124:19
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https://doi.org/10.1...
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Abstract
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- In this study, we analyze the correlation between magnetization and magnetoresistance of perpendicularly anisotropic [Co/Pd] multilayered films with different thicknesses of Pd layers t(Pd) = 0.6-2.0 nm in a wide range of temperatures, T = 4-300 K. We revealed that electron scattering by magnons makes a significant contribution to the magnetoresistance of the multilayers regardless of the layer thickness. Contrary to expectations, the effect of magnon magnetoresistance (MMR) increases with decreasing temperature below T = 50 K in the films with t(Pd) = 0.8 and 1.0 nm. The revealed low-temperature MMR increase, which is most pronounced in the [Co-0.5/Pd-1.0] multilayers, is associated with the enhanced magnon excitation due to antiferromagnetic exchange coupling between the Co layers. The latter ensures an atypical shape of the magnetization curves of the [Co-0.5/Pd-1.0] multilayers at low temperatures in a perpendicular magnetic field, which combine a quadratic hysteresis loop of a perpendicularly anisotropic ferromagnet and an anomalous magnetization drop resulting from a violation of the ordering of magnetic moments and their amplified oscillations initiated by the interlayer exchange coupling.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Kasiuk, Julia
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Wu, Wen-Bin
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Przewoznik, Janu ...
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Kapusta, Czeslaw
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Svito, Ivan
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Nguyen, Thanh Hu ...
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show more...
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Do, Khanh Tung
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Tran, Dang Thanh
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Do, Hung Manh
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Åkerman, Johan, ...
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Nguyen, Thi Ngoc ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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APPLIED PHYSICS ...
- By the university
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University of Gothenburg