Correlation between the Magnetoresistance, IR Magnetoreflectance, and Spin-Dependent Characteristics of Multilayer Magnetic Films

Kravets, A. F.

doi:10.1155/2012/323279

Cited by 2 publications

(1 citation statement)

References 23 publications

(53 reference statements)

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“…In spite of the technical challenge, different groups involved in the growth and study of spintronic systems soon explored the corresponding MRE properties. Apart from the Ni 80 Fe 20 /Cu/Co/Cu multilayers of Jacquet and Valet MRE pioneering work [13], various other systems have been studied in the near and far infrared range, such as Co/Cu [34,36,47,48] and CoFe/Cu multilayers [40,49,50,51]; Fe/Cr structures [52][53][54];…”

Section: Mre In Gmr Systemsmentioning

confidence: 99%

Active photonic platforms for the mid-infrared to the THz regime using spintronic structures

Armelles

Cebollada

2020

Nanophotonics

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AbstractSpintronics and Photonics constitute separately two disciplines of huge scientific and technological impact. Exploring their conceptual and practical overlap offers vast possibilities of research and a clear scope for the corresponding communities to merge and consider innovative ideas taking advantage of each other’s potentials. As an example, here we review the magnetic field modification of the optical response of photonic systems fabricated out of spintronic materials, or in which spintronic components are incorporated. This magnetic actuation is due to the Magneto Refractive Effect (MRE), which accounts for the change in the optical constants of a spintronic system due to the magnetic field induced modification of the electrical resistivity. Due to the direct implication of conduction electrons in this phenomenon, this change in the optical constants covers from the mid-infrared to the THz regime. After introducing the non-expert reader into the spintronic concepts relevant to this work, we then present the MRE exhibited by a variety of spintronic systems, and finally show the different applications of this property in the generation of active spintronic-photonic platforms.

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Section: Mre In Gmr Systemsmentioning

confidence: 99%

Active photonic platforms for the mid-infrared to the THz regime using spintronic structures

Armelles

Cebollada

2020

Nanophotonics

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Magnetorefractive effect in metallic Co/Pt nanostructures

Yurasov,

Sayfulina,

Bakhvalova

2024

Rossijskij tehnologičeskij žurnal

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Objectives. To carry out a theoretical investigation of the features of magnetorefractive effect for metal-to-metal nanostructures. This study uses the example of multilayer Co/Pt nanostructures (ferromagnetic metal–paramagnetic metal) with a different ratio of ferromagnetic and paramagnetic phases in the visible and near-infrared (IR) spectral regions.Methods. The dependence was expressed explicitly using the basic formulas for permittivity, refraction and extinction coefficients, and optical conductivity. This then confirms the common nature of these two effects. The magnetorefractive effect for s-polarization of light was calculated using Fresnel formulas for a three-layer structure. This took into account the thickness of the samples and the influence of the substrate. Effective medium methods were used to calculate the dielectric permittivity of materials. Since the average range of cobalt concentrations was being studied, the Bruggeman approximation was used to establish the effective permittivity of nanostructures. The reflection coefficient at normal incidence was calculated for all nanostructures.Results. Since the permittivity of inhomogeneous samples was replaced by a common effective parameter depending on the permittivity of each component, we were able to apply the Drude–Lorentz theory for conductors in a high-frequency alternating field and then estimate the parameters of the electronic structure of the samples being studied. Plasma and relaxation frequencies were calculated for each sample. This made it possible for the number of free electrons to be estimated and scattering in nanostructures to be investigated.Conclusions. It was shown that Langmuir shielding can be observed in the given energy range in the IR region of the spectrum. The calculated values correlate well with the experimental data.

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Correlation between the Magnetoresistance, IR Magnetoreflectance, and Spin-Dependent Characteristics of Multilayer Magnetic Films

Cited by 2 publications

References 23 publications

Active photonic platforms for the mid-infrared to the THz regime using spintronic structures

Active photonic platforms for the mid-infrared to the THz regime using spintronic structures

Magnetorefractive effect in metallic Co/Pt nanostructures

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