Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropy

Pan, Santanu; Mondal, Sucheta; Zelent, Mateusz; Szwierz, R.; Pal, Semanti; Hellwig, Olav; Krawczyk, Maciej; Barman, Anjan

doi:10.1103/physrevb.101.014403

Cited by 16 publications

(33 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This cross section also highlights the complexity of the etched structures, as the size of the antidots is larger at the top than at the bottom leading to a bowl geometry. Similar shapes were observed by others 64 . This is confirmed with SEM images obtained at a tilted angle of 52° (Fig.…”

Section: Experimental and Numerical Methodssupporting

confidence: 91%

Influence of Ga+ milling on the spin waves modes in a Co2MnSi Heusler magnonic crystal

Mantion

Biziere

2022

Journal of Applied Physics

View full text Add to dashboard Cite

Ferromagnetic resonance experiment was performed to study the magnonic modes of an antidot lattice nanopatterned in a sputtered Co2MnSi Heusler alloy thin film. The magnonic crystal was prepared with a Ga+ focused ion beam, and micromagnetic simulations were used to explain qualitatively and quantitatively the complex experimental spin waves spectrum. We demonstrate the necessity to consider the geometrical imperfections and the modification of the Co2MnSi magnetic parameters induced by the nanofabrication process to describe the evolution of the frequencies and spatial profiles of the principal experimental spin waves modes in the 0–300 mT magnetic field range. In particular, our model suggests that Ga+ milling induces a drastic decrease (between 80% and 90%) in the bulk Co2MnSi magnetic parameters. In addition, simulations reveal the presence of a diversity of localized and extended spin waves modes whose spatial profiles are closely related to the evolution of the magnetic state at equilibrium from a very non-collinear configuration up to a quasi-saturated state.

show abstract

Section: Experimental and Numerical Methodssupporting

confidence: 91%

Influence of Ga+ milling on the spin waves modes in a Co2MnSi Heusler magnonic crystal

Mantion

Biziere

2022

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…The decrease of SW frequencies is found to be driven by a dynamical coupling between the localized modes within the shells, most likely by tunnelling and exchange interactions. The shape of the antidots has found to play decisive roles in the in-plane domain structure and the ensuing edge-localized SW spectra, their mutual interactions and interaction with bulk SW excitations 170 .…”

Section: H Dynamics Of Nanoscale Magnetic Multilayersmentioning

confidence: 99%

Magnetization dynamics of nanoscale magnetic materials: A perspective

Barman

Mondal

Sahoo

et al. 2020

Journal of Applied Physics

View full text Add to dashboard Cite

Nanomagnets form the building blocks for a gamut of miniaturized energyefficient devices including data storage, memory, wave-based computing, sensors and biomedical devices. They also offer a span of exotic phenomena and stern challenges. The rapid advancements of nanofabrication, characterization and numerical simulations during last two decades have made it possible to explore a plethora of science and technology related to nanomagnet dynamics. The progress in the magnetization dynamics of single nanomagnets and one-and two-dimensional arrays of nanostructures in the form of dots, antidots, nanoparticles, binary and bicomponent structures and patterned multilayers have been presented in details.Progress in unconventional and new structures like artificial spin ice and three-dimensional nanomagnets and spin textures like domain walls, vortex and skyrmions have been presented. Furthermore, a huge variety of new topics in the magnetization dynamics of magnetic nanostructures are rapidly emerging. An overview of the steadily evolving topics like spatiotemporal imaging of fast dynamics of nanostructures, dynamics of spin textures, artificial spin ice have been discussed. In addition, dynamics of contemporary and newly transpired magnetic architectures such as nanomagnet arrays with complex basis and symmetry, magnonic quasicrystals, fractals, defect structures, novel three-dimensional structures have been introduced. Effects of various spin-orbit coupling and ensuing spin textures as well as quantum hybrid systems comprising of magnon-photon, magnon-phonon and magnon-magnon coupling, antiferromagnetic nanostructures are rapidly growing and are expected to dominate this research field in the coming years. Finally, associated topics like nutation dynamics and nanomagnet antenna are briefly discussed. Despite showing a great progress, only a small fraction of nanomagnetism and its ancillary topics have been explored so far and huge efforts are envisaged in this evergrowing research area in the generations to come.

show abstract

“…In the last decade, there have been a large number of study of SW propagation, localization, hybridization and damping on different types of patterned structures such as physically isolated periodically patterned magnetic structures, namely dot lattices [20][21][22][23][24][25][26], nanowire and nanostripes [27][28][29] and connected structures, namely antidot (AD) lattices [30][31][32][33][34][35][36]. The main focus of studying patterned magnetic nanostructures is to understand and tune the SW frequency, nature of modes, mode profiles and damping by varying the element width [21,23,28,37], shape [26,34,35], lattice constant [24,38], lattice symmetry [25,36], base material [35,39] as well as by changing the external bias magnetic field strength and orientation [32][33][34]. Further, the filled AD lattices [40] and other form of bicomponent MCs [41] offer more freedom to tune the SW properties.…”

Section: Introductionmentioning

confidence: 99%