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39 results for “spin waves”
Spinning test-body orbiting around Schwarzschild black hole: circular dynamics and gravitational-wave fluxes
<p>We release gravitational wave fluxes at null-infinity from a spinning test-body in circular equatorial orbits around a Schwarzschild black hole. Four different prescriptions are used for the dynamics: the Mathisson-Papapetrou formalism under the Tulczyjew (TUL) spin-supplementary-condition (SSC), the Pirani (PIR) SSC and the Ohashi-Kyrian-Semerak (OKS) SSC, and the spinning particle limit of the effective-one-body Hamiltonian (HAM) of [Phys.~Rev.~D.90,~044018(2014)]. For more details see xxxx .</p> <p>The multipolar fluxes are given for l=2,3 m=1,2,3 at the Boyer-Lindquist radii</p> <p> r = 4 5 6 7 8 10 12 15 20 30 ,</p> <p>in cases they were not computed the data contains a "42". Note that the fluxes in these data files are assumed to contain both the +m and -m contributions, since they are identical for equatorial orbits and aligned spins. <br /> Additionally, the data files contain the key numbers describing the circular dynamics (see paper).</p> <p>Units <span class="math-tex"><em>c</em>=<em>G</em>=1.</span></p>
Dataset for the manuscript "Collective spin waves in RKKY interlayer-coupled Ni80Fe20/Ru/ Ni80Fe20 nanowire arrays"
<p>These are the dataset relative to paper entitled "<strong><span>Collective spin waves in RKKY interlayer-coupled </span></strong><strong><span>Ni</span></strong><strong><sub><span>80</span></sub></strong><strong><span>Fe</span></strong><strong><sub><span>20</span></sub></strong><strong><span>/Ru/</span></strong><strong><span> </span></strong><strong><span>Ni</span></strong><strong><sub><span>80</span></sub></strong><strong><span>Fe</span></strong><strong><sub><span>20 </span></sub></strong><strong><span>nanowire arrays</span></strong><strong>"</strong></p>
Spin wave dispersion of ultra-low damping hematite (α-Fe2O3) at GHz frequencies
<p>Raw data associated to the manuscript ‘’Spin wave dispersion of ultra-low damping hematite (α-Fe<sub>2</sub>O<sub>3</sub>) at GHz frequencies‘’,</p> <p>Physical Review Materials 7, 054407(2023); doi: 10.1103/PhysRevMaterials.7.054407<br> Information about file formats and measurement parameters are described in text files in the specific folders.</p> <p>Paper abstract:<br> Low magnetic damping and high group velocity of spin waves (SWs) or magnons are two crucial parameters for functional magnonic devices. Magnonics research on signal processing and wave-based computation at GHz frequencies focused on the artificial ferrimagnetic garnet Y<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> (YIG) so far. We report on spin-wave spectroscopy studies performed on the natural mineral hematite (α-Fe<sub>2</sub>O<sub>3</sub>) which is a canted antiferromagnet. By means of broadband GHz spectroscopy and inelastic light scattering, we determine a damping coefficient of 1.1×10<sup>−5</sup> and magnon group velocities of a few 10 km/s, respectively, at room temperature. Covering a large regime of wave vectors up to k≈24 rad/μm, we find the exchange stiffness length to be relatively short and only about 1 Å. In a small magnetic field of 30 mT, the decay length of SWs is estimated to be 1.1 cm similar to the best YIG. Still, inelastic light scattering provides surprisingly broad and partly asymmetric resonance peaks. Their characteristic shape is induced by the large group velocities, low damping and distribution of incident angles inside the laser beam. Our results promote hematite as an alternative and sustainable basis for magnonic devices with fast speeds and low losses based on a stable natural mineral.</p>
Research Data - Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructures
<p>Source data from ferromagnetic resonance experiments and micromagnetic simulations in <em>tetmag</em> software (<a href="https://github.com/R-Hertel/tetmag">https://github.com/R-Hertel/tetmag</a>), used in the paper "Collective Spin-Wave Dynamics in Gyroid Ferromagnetic Nanostructures"<em> </em>in <em>ACS Applied Materials & Interfaces </em>(<a href="https://doi.org/10.1021/acsami.4c02366">https://doi.org/10.1021/acsami.4c02366</a>).</p>
Dataset of the publication: Tailoring spin waves in 2D transition metal phosphorus trichalcogenides via atomic-layer substitution
<p>Dataset of the publication: Tailoring spin waves in 2D transition metal phosphorus trichalcogenides via atomic-layer substitution</p> <p>DOI: 10.1039/d2dt02482a</p> <p>A. M. Ruiz, DL. Esteras, A. Rybakov, J. J. Baldov </p> <p>Dalton Trans., 54, 44, 16816-16823 (2022)</p>
Directional excitation of a high-density magnon gas using coherently driven spin waves
<p>Data corresponding to the figures of the main text of: "Directional excitation of a high-density magnon gas using coherently driven spin waves "</p>
Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction-Data files
<p>Raw data associated to the manuscript ‘Confined dipole and exchange spin waves in a bulk chiral magnet with Dzyaloshinskii-Moriya interaction.” File formats are described in info.txt files in the concerning folders. For plotting and data evaluation Matlab 2019b and OriginPro 2018b were used. </p> <p>We acknowledge financial support from the Swiss National Science Foundation (SNSF) via Grant No. 171003 Sinergia project Nanoskyrmionics, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Grant No. TRR80 (From Electronic Correlations to Functionality, Project No. 107745057, and Projects No. E1 and No. F7), SPP2137 (Skyrmionics, Project No. 403191981, Grant No. PF393/19), and the excellence cluster MCQST under Germany’s Excellence Strategy EXC-2111 (Project No. 390814868). Financial support by the European Research Council (ERC) through Advanced Grants No. 291079 (TOPFIT) and No. 788031 (ExQuiSid) is gratefully acknowledged.</p> <p>Paper abstract:</p> <p>The Dzyaloshinskii-Moriya interaction (DMI) has an impact on excited spin waves in the chiral magnet Cu<sub>2</sub>OSeO<sub>3</sub> by means of introducing asymmetry in their dispersion relations. The confined eigenmodes of a chiral magnet are hence no longer the conventional standing spin waves. Here we report a combined experimental and micromagnetic modeling study by broadband microwave spectroscopy, and we observe confined spin waves up to eleventh order in bulk Cu<sub>2</sub>OSeO<sub>3</sub> in the field-polarized state. In micromagnetic simulations we find similarly rich spectra. They indicate the simultaneous excitation of both dipole- and exchange-dominated spin waves with wavelengths down to (47.2 ± 0.05) nm attributed to the exchange interaction modulation. Our results suggest the DMI to be effective in creating exchange spin waves in a bulk sample without the challenging nanofabrication and thereby in exploring their scattering with noncollinear spin textures.</p>
Imaging Spin-Wave Damping Underneath Metals Using Electron Spins in Diamond
<p>Data corresponding to the figures in the main text of "Imaging Spin-Wave Damping Underneath Metals Using<br> Electron Spins in Diamond"</p>
Spin-wave spectra in antidot lattice with inhomogeneous perpendicular magnetic anisotropy
<p>Data for "Spin-wave spectra in antidot lattice with inhomogeneous perpendicular magnetic anisotropy"</p> <p>https://aip.scitation.org/doi/abs/10.1063/5.0128621</p>
Observation and control of hybrid spin-wave–Meissner-current transport modes
<p>Dataset accompanying the manuscript "Observation and control of hybrid spin-wave-Meissner-current transport modes" (https://arxiv.org/pdf/2307.07581.pdf).</p>
Dataset for "Impact of surface anisotropy on the spin-wave dynamics in thin ferromagnetic film"
<p>The dataset consist of the data used to prepare the figures for the manusript entitled <em>Impact of surface anisotropy on the spin-wave dynamics in thin ferromagnetic film.</em> </p> <p>Please read README.txt file to see the description of the data in the files.</p>
Ocean and ice spin-up data for role of surface gravity waves in aquaplanet ocean climates
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Control of Charge-Spin Interconversion in van der Waals Heterostructures with Chiral Charge Density Waves
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Dataset for "Reconfigurable spin-wave platform based on interplay between nanodots and waveguide in hybrid magnonic crystal"
<p>The dataset consist of the data used to prepare the figures for the manuscript: </p> <p>Krzysztof Szulc, Mateusz Zelent, Maciej Krawczyk<br><em>Reconfigurable spin-wave platform based on interplay between nanodots and waveguide in hybrid magnonic crystal.</em></p> <p>together with animated version of two figures: Figure 4 and Figure S1.</p> <p>Please read README.txt file to see the description of the data in the files.</p>
Frequency multiplication by collective nanoscale spin wave dynamics
<p>This dataset contains all primary data used in the manuscript.</p>
Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering
<p>The repository contains the data presented in the figures in the manuscript entitled <br> "Spin wave stiffness and damping in a frustrated chiral helimagnet Co8Zn8Mn4 as measured by small-angle neutron scattering".</p> <p>Requests for further information can be directed to the corresponding authors Victor Ukleev (victor.ukleev 'at' psi.ch).</p>
Research Data - Magnetic Field Controlled Surface Localization of Spin-Wave Ferromagnetic Resonance Modes in 3D Nanostructures
<p>Source data from micromagnetic simulations performed in COMSOL Multiphysics software and Python codes for data post-processing utilized in the paper "Magnetic Field Controlled Surface Localization of Spin-Wave Ferromagnetic Resonance Modes in 3D Nanostructures."</p> <p>The files from Comsol (.mph) are without simulation solutions due to their large size - please contact me if needed.</p>
Data set for "Chiral Magnonic Crystals: Unconventional Spin-Wave Phenomena Induced by a Periodic Dzyaloshinskii-Moriya Interaction"
<p>Scripts for the micromagnetic simulations of the publication "Chiral Magnonic Crystals: Unconventional Spin-Wave Phenomena Induced by a Periodic Dzyaloshinskii-Moriya Interaction", using the OOMMF software. These codes reproduce the result of magnonic waveguides with periodic Dzyaloshinskii-Moriya interactions. A Dockerfile and a Makefile are included for the reproducibility of the results.</p> <p>The repository containing these results, together with a explanatory README document can be found in:</p> <p>https://github.com/davidcortesortuno/paper-2018-chiral_magnonic_crystals</p> <p> </p> <p>The files included in this Zenodo release refer to the v1.0 version of the data set. For an updated version of the scripts refer to the Github repository.</p>
Unidirectional spin wave emission by travelling pair of magnetic field profiles
<p>This is the full data for this paper: https://arxiv.org/pdf/2307.12653.pdf</p> <p>G. P. anf J. W. K. would like to acknowledge the erasmus mundus MaMaSELF programm and the support from the National Science Center – Poland grant No. 2021/43/I/ST3/00550</p>
Data from: Possible observation of quadrupole waves in spin nematics
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