Chirality-Dependent Transmission of Spin Waves through Domain Walls

Buijnsters, F. J.; Ferreirós, Yago; Fasolino, A.; Katsnelson, M. I.

doi:10.1103/physrevlett.116.147204

Cited by 51 publications

(38 citation statements)

References 28 publications

(33 reference statements)

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“…This can be largely explained within a rigid particle model containing gyrotropic forces dependent on the sign of the topological charge. Beyond this, it is also interesting to investigate the rich high frequency characteristics of magnetic skyrmions, including inertial effects [114,242], effective mass, gyrotropic motion [243], breathing and chiral edge modes [244], and the (mutual) interaction with high frequency spin waves [157,245].…”

Section: High Frequency Dynamics Of Magnetic Skyrmionmentioning

confidence: 99%

Skyrmions in magnetic multilayers

et al. 2017

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Symmetry breaking together with strong spin-orbit interaction give rise to many exciting phenomena within condensed matter physics. A recent example is the existence of chiral spin textures, which are observed in magnetic systems lacking inversion symmetry. These chiral spin textures, including domain walls and magnetic skyrmions, are both fundamentally interesting and technologically promising. For example, they can be driven very efficiently by electrical currents, and exhibit many new physical properties determined by their real-space topological characteristics. Depending on the details of the competing interactions, these spin textures exist in different parameter spaces. However, the governing mechanism underlying their physical behaviors remain essentially the same. In this review article, the fundamental topological physics underlying these chiral spin textures, the key factors for materials optimization, and current developments and future challenges will be discussed. In the end, a few promising directions that will advance the development of skyrmion based spintronics will be highlighted.This review article is organized as follows:1. Topological physics of magnetic skyrmions 1.1 Origin of spin topology 1.2 Real space topological physics 1.3 Topological distinction of bubble-like spin textures 2. Interfacial chiral magnetism 2.1 From spin spiral to chiral domain wall 2.2 Physical origin of the chiral interfacial DMI 2.3 Measurement of the interfacial DMI 2.4 Unique advantages of magnetic skyrmions in heterostructures 3. Current developments in thin-film skyrmions 3.1 Writing and deleting a single skyrmion 3.2 Blowing magnetic skyrmion bubbles 3.3 Moving skyrmions in wires 3.4 Magnetic skyrmions in asymmetric trilayers 3.5 Characteristics of topological trivial bubbles 3.6 Hall effect of topological charge -skyrmion Hall effect 3.7 High frequency dynamics of magnetic skyrmion 3.8 Artificial skyrmions stabilized by interlayer coupling in thin films 3.9 Novel spin-resolved imaging techniques 3.9.1 Lorentz transmission electron microscopy 3.9.2 Spin-polarized low energy electron microscopy 3.9.3 Photoemission electron microscopy 4. PerspectivesRecent advancements in nanotechnology resulted in concomitant progress in magnetism, with two developments being particularly influential in nanomagnetic systems: controlling magnets via electric (field/current) excitations [5][6][7][8] and the discovery of topological spin textures [9]. Electric control of magnetism is made possible by utilizing the coupling between electron spin and its orbital motion.

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Section: High Frequency Dynamics Of Magnetic Skyrmionmentioning

confidence: 99%

Skyrmions in magnetic multilayers

et al. 2017

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“…Recently, nanoscale spin textures in magnetic materials have gained attention for their potential as functional elements in spin‐wave devices. In particular, spin‐wave guiding, generation, and tunable transmission were observed at naturally occurring spin textures such as vortices and domain walls.…”

mentioning

confidence: 99%

Optically Inspired Nanomagnonics with Nonreciprocal Spin Waves in Synthetic Antiferromagnets

et al. 2020

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Integrated optically inspired wave‐based processing is envisioned to outperform digital architectures in specific tasks, such as image processing and speech recognition. In this view, spin waves represent a promising route due to their nanoscale wavelength in the gigahertz frequency range and rich phenomenology. Here, a versatile, optically inspired platform using spin waves is realized, demonstrating the wavefront engineering, focusing, and robust interference of spin waves with nanoscale wavelength. In particular, magnonic nanoantennas based on tailored spin textures are used for launching spatially shaped coherent wavefronts, diffraction‐limited spin‐wave beams, and generating robust multi‐beam interference patterns, which spatially extend for several times the spin‐wave wavelength. Furthermore, it is shown that intriguing features, such as resilience to back reflection, naturally arise from the spin‐wave nonreciprocity in synthetic antiferromagnets, preserving the high quality of the interference patterns from spurious counterpropagating modes. This work represents a fundamental step toward the realization of nanoscale optically inspired devices based on spin waves.

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“…† These authors contributed equally to this work. * This can be achieved by utilizing interference of SWs due to the control of the SW phase [9,10,11]. A suitable material for this purpose is yttrium iron garnet (YIG).…”

Section: Introductionmentioning

confidence: 99%

“…It offers an ultra-low magnetic damping [12,13,14,15,16], and therefore, a relative long decay length is expected. 10 Beside the material for SW propagation, the magnetic configuration of the system is also essential. For an in-plane magnetization, the propagation direction of SWs relative to the magnetization direction determines the type of the SW [17, 18,19].…”

Section: Introductionmentioning

confidence: 99%