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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 (författare)
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Wu, Wen-Bin (författare)
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Przewoznik, Janusz (författare)
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Kapusta, Czeslaw (författare)
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Svito, Ivan (författare)
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Nguyen, Thanh Huong (författare)
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Do, Khanh Tung (författare)
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Tran, Dang Thanh (författare)
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Do, Hung Manh (författare)
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- Åkerman, Johan, 1970 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Nguyen, Thi Ngoc Anh (författare)
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: APPLIED PHYSICS LETTERS. - 0003-6951 .- 1077-3118. ; 124:19
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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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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visa fler...
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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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visa färre...
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- NATURVETENSKAP
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NATURVETENSKAP
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APPLIED PHYSICS ...
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Göteborgs universitet