Some peculiarities of spin-wave propagation in magnonic waveguides

Grigoryeva, N. Yu.; Popov, Dušan; Kalinikos, B. A.

doi:10.1051/epjconf/20134012004

Cited by 5 publications

(4 citation statements)

References 10 publications

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“…In particular, the fact that the dominantly generated waveguide mode is the fundamental waveguide mode in a large wavevector range is the basis of the large potential for the application of parallel pumping in microstructures, as will be discussed in the following Sections. However, it should be noted that due to the very small differences in the threshold fields for waveguides with widths in the µm range, small changes in the spin-wave lifetime due to wavevector dependent damping [22,23,40,85,90] or changes of the dispersion, such as avoided crossings due to dipolar interaction between the waveguide modes [91][92][93], can render the generated mode spectra more complicated.…”

Section: Parametric Generation In Transversely Magnetized Waveguidesmentioning

confidence: 99%

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

2017

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Magnonics and magnon spintronics aim at the utilization of spin waves and magnons, their quanta, for the construction of wave-based logic networks via the generation of pure all-magnon spin currents and their interfacing with electrical charge transport. The promise of efficient parallel data processing and low power consumption renders this field one of the most promising research areas in spintronics. In this context, the process of parallel parametric amplification, i.e., the conversion of microwave photons into magnons at one half of the microwave frequency, has proven to be a versatile tool to excite and to manipulate spin waves. Its beneficial and unique properties such as frequency and mode-selectivity, the possibility to excite spin waves in a wide wavevector range and the creation of phase-correlated wave pairs, have enabled the achievement of important milestones like the magnon Bose Einstein condensation and the cloning and trapping of spinwave packets. Parallel parametric amplification, which allows for the selective amplification of magnons while conserving their phase is, thus, one of the key methods of spin-wave generation and amplification.The application of parallel parametric amplification to CMOS-compatible micro-and nanostructures is an important step towards the realization of magnonic networks. This is motivated not only by the fact that amplifiers are an important tool for the construction of any extended logic network but also by the unique properties of parallel parametric amplification. In particular, the creation of phase-correlated wave pairs allows for rewarding alternative logic operations such as a phase-dependent amplification of the incident waves. Recently, the successful application of parallel parametric amplification to metallic microstructures has been reported which constitutes an important milestone for the application of magnonics in practical devices. It has been demonstrated that parametric amplification provides an excellent tool to generate and to amplify spin waves in these systems in a wide wavevector range. In particular, the amplification greatly benefits from the discreteness of the spin-wave spectra since the size of the microstructures is comparable to the spin-wave wavelength. This opens up new, interesting routes of spin-wave amplification and manipulation. In this Review, we will give an overview over the recent developments and achievements in this field.

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Section: Parametric Generation In Transversely Magnetized Waveguidesmentioning

confidence: 99%

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

2017

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“…For a precise description of all peculiarities of the spin-wave propagation in a waveguide, these effects should be taken into account. However, they involve a more elaborate derivation of the spin-wave dispersion [59][60][61] which can generally not be performed analytically anymore. The presented theory has proven to be a very versatile tool for the description of most phenomena observed in spinwave waveguides in the absence of iDMI unless k || → 0.…”

Section: Analytical Modelmentioning

confidence: 99%

Creation of unidirectional spin-wave emitters by utilizing interfacial Dzyaloshinskii-Moriya interaction

et al. 2017

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“…According to the SWM approach [21], a solution of the system of integro differential equations (7) is found as an expansion of the transverse distribution of variable magnetization into a series in SWMs, repre senting orthogonal vector functions (ξ, η). In the case of a one dimensional magnonic crystal, this pro…”

Section: Spin Wave Mode Approach For a One Dimensional Magnonic Crystalmentioning

confidence: 99%

“…The explicit form of the functions Φ nq (ξ, η) obeying the Rado-Weertman mixed exchange boundary con ditions was presented in [21].…”

Section: Spin Wave Mode Approach For a One Dimensional Magnonic Crystalmentioning

confidence: 99%

Spectrum of normal waves in one-dimensional magnonic crystals

Grigoryeva

Kalinikos

2014

Phys. Solid State

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A general theory of the spectrum of normal waves propagating in magnetic structures with period ically modulated parameters has been developed. Based on the method of tensorial Green's functions, spin wave mode approach, and Floquet-Bloch theorem, a general form of the dispersion relation has been obtained for dipole exchange spin waves propagating in a one dimensional magnonic crystal formed by an arbitrary spatially periodic modulation of all magnetic and geometric parameters in the Maxwell's equations and the Landau-Lifshitz equation. An original method has been proposed for taking into account an arbi trary profile of the modulation of the chosen parameters. The efficiency of the presented theory has been demonstrated using a simple example of the description of an experimental spectrum of a dynamic magnonic crystal.

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Some peculiarities of spin-wave propagation in magnonic waveguides

Cited by 5 publications

References 10 publications

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

Parallel pumping for magnon spintronics: Amplification and manipulation of magnon spin currents on the micron-scale

Creation of unidirectional spin-wave emitters by utilizing interfacial Dzyaloshinskii-Moriya interaction

Spectrum of normal waves in one-dimensional magnonic crystals

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