Magnetostatic modes of a ferromagnetic superlattice in an oblique applied field

Zhu, Rongfeng; Peng, Hongyan; Zhang, Mei-Heng; Chen, Yuqiang

doi:10.1016/j.physb.2009.03.046

Cited by 6 publications

(8 citation statements)

References 29 publications

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“…[49][50][51][52][53][54][55][56] Both the exchange and dipolar interactions are considered. The latter, crucial to ensure the dynamic coupling of magnetic layers through the dielectric nonmagnetic complex structure, allows the propagation of SWs across the system and generates a magnonic band structure.…”

mentioning

confidence: 99%

Photonic-magnonic crystals: Multifunctional periodic structures for magnonic and photonic applications

Kłos

Krawczyk

Dadoenkova

et al. 2014

Journal of Applied Physics

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We investigate the properties of a photonic-magnonic crystal, a complex multifunctional one-dimensional structure with magnonic and photonic band gaps in the GHz and PHz frequency ranges for spin waves and light, respectively. The system consists of periodically distributed dielectric magnetic slabs of yttrium iron garnet and nonmagnetic spacers with an internal structure of alternating TiO2 and SiO2 layers which form finite-size dielectric photonic crystals. We show that the spin-wave coupling between the magnetic layers, and thus the formation of the magnonic band structure, necessitates a nonzero in-plane component of the spin-wave wave vector. A more complex structure perceived by light is evidenced by the photonic miniband structure and the transmission spectra in which we have observed transmission peaks related to the repetition of the magnetic slabs in the frequency ranges corresponding to the photonic band gaps of the TiO2/SiO2 stack. Moreover, we show that these modes split to very high sharp (a few THz wide) subpeaks in the transmittance spectra. The proposed novel multifunctional artificial crystals can have interesting applications and be used for creating common resonant cavities for spin waves and light to enhance the mutual influence between them.

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mentioning

confidence: 99%

Photonic-magnonic crystals: Multifunctional periodic structures for magnonic and photonic applications

Kłos

Krawczyk

Dadoenkova

et al. 2014

Journal of Applied Physics

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“…Depending on the depth of the irregularity, the reflection coefficient var ies proportionally to ε 2 , and the obtained expressions are valid for shallow defects. If the depth of the irregu larity does not obey condition (1), then, in order to guarantee convergence of power series (6) in the pres ence of magnetic potential (7), we have to take into account higher order terms of the expansion.…”

Section: Results Of Numerical Calculationsmentioning

confidence: 99%

“…The tensor of the high frequency component of the permeability [6] and its components written for the…”

Section: Formulation Of Boundary Perturbations On the Surface Of A Fementioning

confidence: 99%

“…The incident MSW corresponding to the wave prop agating in a film devoid of irregularities can be repre sented in the form of the magnetic potential [2,6]:…”

Section: Formulation Of Boundary Perturbations On the Surface Of A Fementioning

confidence: 99%

“…Coordinate x on surface S of the cavity depends on coordinates y and z and, due to condition (1), is close − εΨ to zero. Therefore, potential (6) can also be expanded in the Taylor series in terms of coordinate x:…”

Section: Formulation Of Boundary Perturbations On the Surface Of A Fementioning

confidence: 99%

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Scattering of forward bulk magnetostatic waves by a defect of the surface of a ferromagnetic film magnetized at an arbitrary angle

Timoshenko

Иванов

Babichev

et al. 2012

J. Commun. Technol. Electron.

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The solution for the diffraction problem of scattering of magnetostatic waves by an arbitrary shal low defect situated under the surface of a ferromagnetic film magnetized at an arbitrary angle is obtained in the quasi static approximation. Expressions for the energy flux density of scattered magnetostatic waves in the far field zone are found. The results of computations of the time averaged flux density of bulk magneto static waves reflected from rectangular and circular shallow irregularities are presented.

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The Transfer Matrix Method and the Theory of Finite Periodic Systems. From Heterostructures to Superlattices

Pereyra

2021

Physica Status Solidi (b)

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Historically, the physics, energy spectrum, and wave functions of superlattices have had different levels of understanding. Unlike the standard approaches, based on theorems for infinite systems, the theory of finite periodic systems (TFPS) constitutes a genuine quantum approach, with closed analytical results. In this theory the finitene number of unit‐cells is an essential condition, while the number of propagating modes, as well as, the potential profiles (or refractive indices) are arbitrary. In this work, the transfer matrix definitions, symmetry properties, group representations, and relations with the scattering amplitudes are reviewed. The derivation of multichannel matrix polynomials (which reduce to Chebyshev polynomials in the one‐propagating mode limit), analytical formulas for resonant states, energy eigenvalues, eigenfunctions, parity symmetries, and discrete dispersion relations for superlattices with different confinement characteristics are reviewed. After showing the inconsistencies and limitations of hybrid approaches that combine the transfer‐matrix method with Floquet's theorem, some applications of the TFPS to multichannel negative resistance, ballistic transistors, coupled channels transport, spintronics, superluminal, and optical antimatter effects are revisited. Two high‐resolution superlattice related experiments are reviewed: the tunneling time in photonic band‐gap and the optical response of blue‐emitting diodes. It is shown that the TFPS accurately predicts the experimental results.

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Magnetostatic modes of a ferromagnetic superlattice in an oblique applied field

Cited by 6 publications

References 29 publications

Photonic-magnonic crystals: Multifunctional periodic structures for magnonic and photonic applications

Photonic-magnonic crystals: Multifunctional periodic structures for magnonic and photonic applications

Scattering of forward bulk magnetostatic waves by a defect of the surface of a ferromagnetic film magnetized at an arbitrary angle

The Transfer Matrix Method and the Theory of Finite Periodic Systems. From Heterostructures to Superlattices

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