The Dynamic Magnonic Crystal: New Horizons in Artificial Crystal Based Signal Processing

Chumak, A. V.; Karenowska, A. D.; Serga, Alexander A.; Hillebrands, B.

doi:10.1007/978-3-642-30247-3_17

Cited by 11 publications

(21 citation statements)

References 47 publications

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“…Since the lateral variations of the bias magnetic field were approximately sinusoidal inside of the YIG film, the spectrum of the crystal contained only one space component and a sole rejection band appeared (see right panel in figure 5(b)). It was demonstrated that the rejection band depth and width could be tuned via the applied current [10,219]. Furthermore, it was shown that such a crystal could be switched from a full transmission to a full rejection state faster than 10 ns, which is a tenth of the spin-wave relaxation time and the time of spin-wave propagation through the crystal.…”

Section: Current-controlled Dynamic Magnonic Crystalsmentioning

confidence: 93%

“…This shift results in a spectral inversion in the frequency domain. The frequency inversion in a range of frequencies of ±15 MHz has been shown experimentally [10,104,105].…”

Section: Frequency Inversion and Time Reversal Using Dynamic Magnonicmentioning

confidence: 94%

“…Such magnonic crystals are termed dynamic magnonic crystals [10,219]. The first dynamic magnonic crystal was realized by employing a YIG waveguide placed in a spatially periodic dynamically controllable magnetic field provided by a current-carrying planar metallic meander structure ( figure 5(b)) [219].…”

Section: Current-controlled Dynamic Magnonic Crystalsmentioning

confidence: 99%

See 2 more Smart Citations

Magnonic crystals for data processing

Chumak

Serga

Hillebrands

2017

J. Phys. D: Appl. Phys.

426

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: Current-controlled Dynamic Magnonic Crystalsmentioning

confidence: 93%

“…This shift results in a spectral inversion in the frequency domain. The frequency inversion in a range of frequencies of ±15 MHz has been shown experimentally [10,104,105].…”

Section: Frequency Inversion and Time Reversal Using Dynamic Magnonicmentioning

confidence: 94%

See 1 more Smart Citation

Magnonic crystals for data processing

Chumak

Serga

Hillebrands

2017

J. Phys. D: Appl. Phys.

426

320

View full text Add to dashboard Cite

show abstract

“…The top panel of (e) shows a schematic diagram of a dynamic magnonic crystal realized using this technique. The crystal comprises a metallic meander structure separated from the surface of a YIG waveguide by a thin spacer [161][162][163][164]. In the absence of a current flowing through the meander structure the transmission characteristics of the system are those of a uniform YIG waveguide and the crystal is "off" (dotted blue line, righthand panel).…”

Section: Magnetic Metamaterials and The Magnonic Crystalmentioning

confidence: 99%

“…The crystal is switched "on" by applying a current I 0 (t) (solid red line) 160], or a spatially modulated magnetic field (Fig. 7e) [161,162]. These last two techniques earn a special mention because they allow time-varying crystal structures to be produced.…”

Section: Magnetic Metamaterials and The Magnonic Crystalmentioning

confidence: 99%

Magnon Spintronics

Karenowska

Chumak

Serga

et al. 2015

Handbook of Spintronics

Self Cite

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Presented here is an introduction to magnon spintronics, the emerging field of research concerned with structures and devices which involve the interconversion between electronic spin currents (spin currents carried by electrons) and magnon currents (spin angular momentum fluxes which do not involve the motion of charged carriers). Aimed at the nonexpert reader, the text reviews fundamental and applied aspects of magnonics and examines how the study of the interplay between magnonic and electronic spin transport both shines a light on new physics, and opens doors to new technologies.

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Interplay between intra- and inter-nanowires dynamic dipolar interactions in the spin wave band structure of Py/Cu/Py nanowires

Gubbiotti

Zhou

Haghshenasfard

et al. 2019

Sci Rep

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We have studied both experimentally and theoretically the reprogrammable spin wave band structure in Permalloy(10 nm)/Cu(5 nm)/Permalloy(30 nm) nanowire arrays of width w = 280 nm and inter-wire separation in the range from 80 to 280 nm. We found that, depending on the inter-wire separation, the anti-parallel configuration, where the magnetizations of the two Permalloy layers point in opposite directions, is stabilized over specific magnetic field ranges thus enabling us to directly compare the band structure with that of the parallel alignment. We show that collective spin waves of the Bloch type propagate through the arrays with different magnonic bandwidths as a consequence of the interplay between the intra- and inter-nanowire dynamic dipolar interactions. A detailed understanding, e.g. whether they have a stationary or propagating character, is achieved by considering the phase relation (in-phase or out-of-phase) between the dynamic magnetizations in the two ferromagnetic layers and their average value. This work opens the path to magnetic field-controlled reconfigurable layered magnonic crystals that can be used for future nanoscale magnon spintronic devices.

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The Dynamic Magnonic Crystal: New Horizons in Artificial Crystal Based Signal Processing

Cited by 11 publications

References 47 publications

Magnonic crystals for data processing

Magnonic crystals for data processing

Magnon Spintronics

Interplay between intra- and inter-nanowires dynamic dipolar interactions in the spin wave band structure of Py/Cu/Py nanowires

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