Large nonlinear ferromagnetic resonance shift and strong magnon-magnon coupling in 
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 nanocross array

Adhikari, Kartik; Sahoo, Swaroop; Mondal, Amrit Kumar; Otani, Y.; Barman, Anjan

doi:10.1103/physrevb.101.054406

Cited by 26 publications

(26 citation statements)

References 30 publications

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“…The number of symmetries in the anisotropy is determined by the shape of individual dots and the symmetry of their lattice arrangement [326][327][328][329]. The collective magnetization dynamics were extensively studied for various shapes of the magnetic dots [330][331][332] such as square [297,325,333], circular [327,328,334,335], triangular [336], rectangular, elliptical, diamond, stadium [337], cross [326,[338][339][340] and were found to be significantly affected by the shape of the individual dots. In 2010 Kryuglyak et al first imaged collective modes of magnetization dynamics in 2D arrays of magnetic dots with time-resolved scanning Kerr microscopy [337].…”

Section: Spin Waves In 2d Arrays Of Nanomagnetsmentioning

confidence: 99%

Applications of nanomagnets as dynamical systems: II

et al. 2021

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In Part I of this topical review, we discussed dynamical phenomena in nanomagnets, focusing primarily on magnetization reversal with an eye to digital applications. In this part, we address mostly wave-like phenomena in nanomagnets, with emphasis on spin waves in myriad nanomagnetic systems and methods of controlling magnetization dynamics in nanomagnet arrays which may have analog applications. We conclude with a discussion of some interesting spintronic phenomena that undergird the rich physics exhibited by nanomagnet assemblies.

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Section: Spin Waves In 2d Arrays Of Nanomagnetsmentioning

confidence: 99%

Applications of nanomagnets as dynamical systems: II

et al. 2021

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“…The values of the effective demagnetization factors have been extracted from the collective modes as shown in the figure caption. The cross-shaped element continues to show great prospects with observations like mode softening, mode crossover, mode splitting and merging of SW frequency branches with the bias field strength and orientation 109 and more recently a strong magnon-magnon coupling and nonlinear FMR behaviour 110 .…”

Section: Magnetic Dotsmentioning

confidence: 99%

“…However, strong coupling between nanoscale metallic ferromagnetic elements is essential for on-chip integration of hybrid systems. To this end a breakthrough was obtained very recently, when a very strong magnon-magnon coupling between Py nanocross elements at moderate microwave power has been achieved where two anticrossings between magnon modes have been observed 110 . Further numerical simulations demonstrated strong coupling between EM and CM in single nanomagnet 323 .…”

Section: Magnon-magnon Couplingmentioning

confidence: 99%

Magnetization dynamics of nanoscale magnetic materials: A perspective

Barman

Mondal

Sahoo

et al. 2020

Journal of Applied Physics

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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.

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“…interferometer [6], grating [7], waveguides [8,9], phase shifters [10], directional couplers [11], nanomagnetic antenna [12] and neuromorphic computing [13] have been demonstrated during last one decade. More recently strong coupling of magnons with microwave photon [14], phonon [15], magnon [16,17] and superconducting qubits [18] have been explored as hybrid systems for quantum transduction as well energy harnessing from alternative sources. Control of magnon propagation using topological spin texture [19] has landed a new research field of spin-texture controlled magnonics.…”

Section: Introductionmentioning

confidence: 99%