Magnonic band gap design by the edge modulation of micro-sized waveguides

Ciubotaru, Florin; Chumak, A. V.; Grigoryeva, N. Yu.; Serga, Alexander A.; Hillebrands, B.

doi:10.1088/0022-3727/45/25/255002

Cited by 44 publications

(30 citation statements)

References 25 publications

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“…• It was shown, by means of numerical simulations, that the nature of single or multiple band gaps is defined by choosing a sinusoidal or step-like variation of the width of the spin-wave waveguide, respectively [205]. This creates an additional degree of freedom in the control of magnonic crystal properties.…”

Section: Discussionmentioning

confidence: 99%

“…The magnonic crystal was represented by a micro-sized planar ferromagnetic waveguide with periodically changing width. By choosing a step-like or sinusoidal variation of the width, the magnonic crystal revealed multiple or single band gaps, respectively [205]. In addition, it was found that both the band gap frequency and depth depend strongly on the probing position inside the magnonic crystal due to the non-uniform distribution of the internal magnetic field.…”

Section: Micro-structured Metallic Magnonic Crystals Based On the Permentioning

confidence: 99%

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Magnonic crystals for data processing

Chumak

Serga

Hillebrands

2017

J. Phys. D: Appl. Phys.

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438

320

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IntroductionThis article focuses on a selection of results in the field of magnonic crystals obtained within the last decade in our group. Special attention is devoted to the application of magnonic crystals in data processing and information technologies. Because of the large number of achievements in the field, it is unavoidable that many important results are excluded from this article. Therefore, we would like to direct the reader's attention to excellent reviews devoted to different aspects of magnonic crystals: spin-wave dynamics in periodic structures for microwave applications [1, 2], Brillouin light scattering (BLS) studies of planar metallic magnonic crystals [3], micromagnetic computer simulations of width-modulated waveguides [4], photo-magnonic aspects of antidot lattices studies [5], theoretical studies of one-dimensional monomode waveguides [6], and reconfigurable magnonic crystals [7]. The results presented in the current review were already partially presented in our own reviews of yttrium iron garnet (YIG) magnonics [8] and magnon spintronics [9] as well as in book chapters on dynamic magnonic crystals [10] and magnon spintronics [11].The article is organized in the following way: In the introduction we describe the field of magnon spintronics and discuss the role of magnonic crystals in it. The next section 2 is devoted to the properties of spin waves in thin planar films and waveguides, to the magnetic materials commonly used in the field, and to the methods of spin-wave excitation and detection. Sections 3 and 4 are devoted to the study of physical phenomena taking place in static and dynamic magnonic crystals, respectively. The application of magnonic crystals for magnonbased processing of analog and digital data is discussed in section 5. Specifically, static magnonic crystals can be used as passive elements, like microwave filters, resonators or delay lines for microwave generation. Reconfigurable and dynamic magnonic crystals are promising as active devices performing, for example, tunable filtering, frequency conversion or time reversal. In the final section we briefly summarize the results. Magnon spintronics: from electron-to magnon-based computingA disturbance in the local magnetic order can propagate in a magnetic material in the form of a wave. This wave was first predicted by Bloch in 1929 and was named spin wave since AbstractMagnons (the quanta of spin waves) propagating in magnetic materials with wavelengths at the nanometer-scale and carrying information in the form of an angular momentum can be used as data carriers in next-generation, nano-sized low-loss information processing systems. In this respect, artificial magnetic materials with properties periodically varied in space, known as magnonic crystals, are especially promising for controlling and manipulating magnon currents. In this article, different approaches for the realization of static, reconfigurable, and dynamic magnonic crystals are presented along with a variety of novel wave phenomena discovered in these cryst...

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Section: Discussionmentioning

confidence: 99%

Section: Micro-structured Metallic Magnonic Crystals Based On the Permentioning

confidence: 99%

Magnonic crystals for data processing

Chumak

Serga

Hillebrands

2017

J. Phys. D: Appl. Phys.

Self Cite

438

320

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show abstract

“…Nevertheless, few theoretical reports on the study of dispersion of SWs in 3D MCs have been made. 25,26 Structured magnonic waveguides [27][28][29] have recently attracted considerable attention due to their selective transmission of microwave bands in the micro-and nano-scales and their potential applications in on-chip microwave signal processing and communication. Magnetic antidots have emerged as an important system of MCs; and a thorough investigation of high frequency magnetization dynamics in them has been reported in the literature.…”

Section: Magnonicsmentioning

confidence: 99%

Effect of hole shape on spin-wave band structure in one-dimensional magnonic antidot waveguide

Kumar¹,

Sabareesan²,

Wang³

et al. 2013

Journal of Applied Physics

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We present the possibility of tuning the spin-wave band structure, particularly the bandgaps in a nanoscale magnonic antidot waveguide by varying the shape of the antidots. The effects of changing the shape of the antidots on the spin-wave dispersion relation in a waveguide have been carefully monitored. We interpret the observed variations by analysing the equilibrium magnetic configuration and the magnonic power and phase distribution profiles during spin-wave dynamics. The inhomogeneity in the exchange fields at the antidot boundaries within the waveguide is found to play a crucial role in controlling the band structure at the discussed length scales. The observations recorded here will be important for future developments of magnetic antidot based magnonic crystals and waveguides. V C 2013 AIP Publishing LLC. [http://dx

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“…The point is that, in practice, the mod ulation of one parameter of a waveguiding structure is accompanied by a variation of several other parame ters of the system [14,18].…”

Section: Introductionmentioning

confidence: 91%

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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Magnonic band gap design by the edge modulation of micro-sized waveguides

Cited by 44 publications

References 25 publications

Magnonic crystals for data processing

Magnonic crystals for data processing

Effect of hole shape on spin-wave band structure in one-dimensional magnonic antidot waveguide

Spectrum of normal waves in one-dimensional magnonic crystals

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