Abstract Interfacial Dzyaloshinskii-Moriya interaction (IDMI) is important for its roles in stabilizing the skyrmionic lattice as well soliton-like domain wall motion leading towards new generation spintronic devices. However, achievement and detection of IDMI often hindered by various spurious effects. Here, we demonstrate occurrence originating primarily from W/CoFeB interface technologically W/CoFeB/SiO 2 heterostructures using Brillouin light scattering technique. Due to presence IDMI,...

Harnessing high-frequency spin dynamics in three-dimensional (3D) nanostructures may lead to paradigm-shifting, next generation devices including high density spintronics and neuromorphic systems. Despite remarkable progress fabrication, the measurement interpretation of complex 3D structures remain exceptionally challenging. Here we take a first step measure coherent waves within artificial ice (ASI) structure using Brillouin light scattering. The 3D-ASI was fabricated by combination...

Time resolved measurement and numerical study of ultrafast spin dynamics in a 3D Co tetrapod structure revealed complex spin-wave modes.

Magnetoelastic (or "straintronic") switching has emerged as an extremely energy-efficient mechanism for the magnetization of magnetostrictive nanomagnets in magnetic memory and logic, non-Boolean circuits. Here, we investigate ultrafast magnetodynamics associated with straintronic a single quasielliptical Co nanomagnet deposited on piezoelectric Pb(Mg1/3Nb2/3)O3–PbTiO3 substrate using time-resolved magneto-optical Kerr effect (TR-MOKE) measurements. The pulsed laser pump beam TR-MOKE plays...

We report microwave-power-driven strong magnon-magnon coupling in $\mathrm{N}{\mathrm{i}}_{80}\mathrm{F}{\mathrm{e}}_{20}$ nanocross array with large anticrossing gaps up to 1.03 GHz. also observe microwave-driven nonlinear shift ferromagnetic resonance (FMR) frequency its sign dependent on the strength of bias magnetic field. A drastic enhancement inter-nanocross-dynamic dipolar interaction results anticrossing, while variation internal spin texture leads FMR shift. The tunable and...

Nanomagnets form the building blocks for a gamut of miniaturized energy-efficient devices including data storage, memory, wave-based computing, sensors and biomedical devices. They also offer span exotic phenomena stern challenges. The progress in magnetization dynamics single nanomagnets one- two-dimensional arrays nanostructures dots, antidots, nanoparticles, binary bicomponent structures patterned multilayers have been presented. Progress unconventional new like artificial spin ice...

Magneto-elastic (straintronic) switching of bistable magnetostrictive nanomagnets is an extremely energy-efficient methodology for (magnetic) binary switches that has recently attracted widespread attention because its potential application in ultra-low-power digital computing hardware. Unfortunately, this modality also error very prone at room temperature. Theoretical studies probability magneto-elastic have predicted probabilities ranging from 10E-8-10E-3 temperature ideal, defect-free...

We have theoretically studied how resonant spin wave modes in an elliptical nanomagnet are affected by fabrication defects, such as small local thickness variations. Our results indicate that defects of this nature, which can easily result from the process, or sometimes deliberately introduced during will significantly alter frequencies, magnetic field dependence and power phase profiles modes. They also spawn new quench existing ones. All has important ramifications for multi-device...

The quest for quantum phenomena in unconventional materials has led to the development of myriad unique systems. Because their unusual atomic-scale interface properties and controllability, graphene/ferromagnet heterostructures have emerged as a strong contender next-generation spintronics. Further demands superior correlation between different microscopic mechanisms involved. Herein, we demonstrate interfacial Dzyaloshinskii–Moriya interaction (iDMI) single-layer graphene/CoFeB/SiO2 from...

Abstract Ferromagnetic nanostripes have gained massive attention due to their intriguing magnetic properties associated with dimensional confinements and shape anisotropy leading toward potential applications in storage, memory, spin‐wave‐based devices. Consequently, reconfiguration of static dynamic by the geometric parameters external field is imperative. Here, a combined experimental numerical study reconfigurable spin‐wave dynamics arrays ferromagnetic stripe thickness strength...

Ferromagnetic antidot arrays have emerged as a system of tremendous interest due to their interesting spin configuration and dynamics well potential applications in magnetic storage, memory, logic, communications sensing devices. Here, we report experimental numerical investigation ultrafast magnetization new type lattice the form triangular-shaped Ni 80 Fe 20 antidots arranged hexagonal array. Time-resolved magneto-optical Kerr effect micromagnetic simulations been exploited study...

Understanding the magnetization dynamics in lattices of antidots (holes, rather than bumps) is interesting for applications spintronics and data-storage technology. Magnetic antidot have potential as magnetophotonic crystals, due to their higher spin-wave velocities (steeper dispersion), compared dot arrays. This study shows that, by tuning shapes holes (and hence anisotropy) arrays, one can control spectra engineer domain structure a thin film Co${}_{2}$Fe${}_{0.4}$Mn${}_{0.6}$Si. work...

The paper presents the solar energy prediction using ANN in order to effectively predict irradiance. With increasing interest scope for renewable energy, many countries are adopting new technologies of photovoltaic which has higher resource potential. If advance 24 hours, irradiance can be predicted, then it would help us immensely optimize production efficiency. Traditional methods were used involved empirical, analytical, and physics-based models, statistical forecasting data, numerical...

Abstract 2D van der Waals (vdW) magnets are the incentive for a new era of spintronics research with unprecedented opportunities. Hitherto, maximum on vdW is restricted by cryogenic temperature due to inability retain long‐range magnetic order at room temperature. The present study demonstrates emergence spin dynamics in association phonon chemically exfoliated Fe x GeTe 2 ( = 3,4,5) flakes employing time‐resolved magneto‐optical Kerr effect microscope. highly intense femtosecond laser pulse...

Metamaterials, fabricated by assembling different compounds at the nanoscale, can have properties not found in naturally occurring materials, and therefore offer new avenues to develop novel devices. In realm of spintronics, where spin electrons is used extend capabilities electronic devices, quest for such functional materials has expanded towards magnetic oxides. Here, finding methods control their anisotropy crucial achieve higher memory density longer stability. order address this...

Materials suitable for magnonic crystals demand low magnetic damping and long spin wave (SW) propagation distance. In this context Co based Heusler compounds are ideal candidates applications. work, antidot arrays (with different shapes) of epitaxial $\mathrm{Co}_2\mathrm{Fe}_{0.4}\mathrm{Mn}_{0.6}\mathrm{Si}$ (CFMS) alloy thin films have been prepared using e-beam lithography sputtering technique. Magneto-optic Kerr effect ferromagnetic resonance analysis confirmed the presence dominant...

We revisit the classic problem of optimal subset selection in online learning set-up. Assume that set $[N]$ consists $N$ distinct elements. On $t$th round, an adversary chooses a monotone reward function $f_t: 2^{[N]} \to \mathbb{R}_+$ assigns non-negative to each $[N].$ An policy selects (perhaps randomly) $S_t \subseteq [N]$ consisting $k$ elements before $f_t$ for round is revealed learner. As consequence its choice, receives $f_t(S_t)$ on round. Our goal design sequential maximize...