Two-magnon damping in thin films in case of canted magnetization: Theory versus experiment

Lindner, J.; Barsukov, I.; Raeder, C.; Hassel, C.; Posth, Oliver; Meckenstock, R.; Landeros, P.; Mills, D. L.

doi:10.1103/physrevb.80.224421

Cited by 140 publications

(108 citation statements)

References 20 publications

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“…It includes a correction factor Ψ = cos(φ − φ H ) accounting for the field dragging effect. 35 The last term reflects the two-magnon scattering with…”

Section: -3mentioning

confidence: 99%

“…33,34 The second term represents the line broadening due to inhomogeneity of the sample and has two components: i) a constant term and ii) a mosaicity term of the form ∝ ∂H r /∂φ H , where H r is the resonance field. 31,35 The third term describes Gilbert-type damping which is proportional to the Gilbert constant α. It includes a correction factor Ψ = cos(φ − φ H ) accounting for the field dragging effect.…”

Section: -3mentioning

confidence: 99%

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Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

et al. 2016

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We report ferromagnetic resonance measurements of magnetic anisotropy and damping in epitaxial La0.7Sr0.3MnO3 (LSMO) and Pt capped LSMO thin films on SrTiO3 (001) substrates. The measurements reveal large negative perpendicular magnetic anisotropy and a weaker uniaxial in-plane anisotropy that are unaffected by the Pt cap. The Gilbert damping of the bare LSMO films is found to be low α = 1.9(1) × 10−3, and two-magnon scattering is determined to be significant and strongly anisotropic. The Pt cap increases the damping by 50% due to spin pumping, which is also directly detected via inverse spin Hall effect in Pt. Our work demonstrates efficient spin transport across the Pt/LSMO interface.

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“…It includes a correction factor Ψ = cos(φ − φ H ) accounting for the field dragging effect. 35 The last term reflects the two-magnon scattering with…”

Section: -3mentioning

confidence: 99%

Section: -3mentioning

confidence: 99%

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

et al. 2016

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“…The two magnon scattering rate Γ depends on the angle θ H (out-ofplane geometry) and on the resonance field H res . A detailed analysis based on the effect of the defects on the response functions of thin films was performed in [22] and [31] for the case when the magnetisation is tipped out-of-plane. We consider here the same type of angular dependence of Γ as in [31] (see (8)).…”

Section: Magnetic Relaxationmentioning

confidence: 99%

“…For the in-plane dependence of ∆H r , the only contributions that were considered were from the isotropic intrinsic damping and the two-magnon contribution which was expressed as follows [21,20,31]:…”

Section: Magnetic Relaxationmentioning

confidence: 99%

Ferromagnetic resonance and magnetic damping in C-doped Mn₅Ge₃

Dutoit¹,

Dolocan²,

Kuz’min³

et al. 2015

J. Phys. D: Appl. Phys.

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Abstract. Ferromagnetic resonance (FMR) was used to investigate the static and dynamic magnetic properties of carbon-doped Mn 5 Ge 3 (C 0.1 and C 0.2 ) thin films grown on Ge(111). The temperature dependence of magnetic anisotropy shows an increased perpendicular magneto-crystalline contribution at 80K with an in-plane easy axis due to the large shape contribution. We find that our samples show a small FMR linewidth (corresponding to an intrinsic magnetic damping parameter α=0.005), which is a measure of the spin relaxation and directly related with the magnetic and structural quality of the material. In the perpendicular-to-plane geometry, the FMR linewidth shows a minimum at around 200K for all the samples, which seems to be not correlated to the C-doping.Ferromagnetic resonance and magnetic damping in C-doped Mn 5 Ge 3 2The magnetic relaxation parameters have been determined and indicate the twomagnon scattering as the main extrinsic contribution. We observe a change in the main contribution from scattering centres in Mn 5 Ge 3 C 0.2 at low temperatures, which could be related to the minimum in linewidth.

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“…However, other damping mechanisms e.g. inhomogeneities in the sample, two magnon scattering and interfaces might also play important role to enhance the damping effect [12][13][14][15][16]. The interfaces are very important for creating pure spin current and its dissipation.…”

Section: Introductionmentioning

confidence: 99%

Study of spin pumping in Co thin film vis-à-vis seed and capping layers using ferromagnetic resonance spectroscopy

Singh

Jena

2017

J. Phys. D: Appl. Phys.

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Abstract:We investigated the dependence of the seed (Ta/Pt, Ta/Au) and capping (Pt/Ta, Au/Ta) layers on spin pumping effect in the ferromagnetic 3 nm thick Co thin film using ferromagnetic resonance spectroscopy. The data is fitted with Kittel's equation to evaluate damping constant and g-factor. A strong dependence of seed and capping layers on spin pumping has been discussed. The value of damping constant (α) is found to be relatively large i.e. 0.0326±0.0008 for the Ta(3)/Pt(3)/Co(3)/Pt(3)/Ta(3) (nm) multilayer structure, while it is 0.0104±0.0003 for Ta(3)/Co(3)/Ta(3) (nm). Increase in α is observed due to Pt layer that works as a good sink for spins due to high spin orbit coupling. In addition, we measured the effective spin conductance  g = 2.00 ± 0.08 × 10 18 m -2 for the tri-layer structure Pt(3)/Co(3)/Pt(3) (nm) as a result of the enhancement in α relative to its bulk value.We observed that the evaluated g-factor decreases as effective demagnetizing magnetic field increases in all the studied samples. The azimuthal dependence of magnetic resonance field and line width showed relatively high anisotropy in the tri-layer Ta(3)/Co(3)/Ta(3) (nm) structure.

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Two-magnon damping in thin films in case of canted magnetization: Theory versus experiment

Cited by 140 publications

References 20 publications

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Ferromagnetic resonance and magnetic damping in C-doped Mn₅Ge₃

Study of spin pumping in Co thin film vis-à-vis seed and capping layers using ferromagnetic resonance spectroscopy

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Two-magnon damping in thin films in case of canted magnetization: Theory versus experiment

Cited by 140 publications

References 20 publications

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

Ferromagnetic resonance and magnetic damping in C-doped Mn5Ge3

Study of spin pumping in Co thin film vis-à-vis seed and capping layers using ferromagnetic resonance spectroscopy

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Product

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Ferromagnetic resonance and magnetic damping in C-doped Mn₅Ge₃