Coherent elastic excitation of spin waves

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August undefined, 2024

WebMay 26, 2024 · A spin current generated by spin pumping should have a single wave mode, carrying the fingerprint of the coherent magnetization excitation in the injector. But spin currents can also be generated by thermal gradients, which produce incoherent currents with a continuum of spin excitation modes (Fig. 1 ) [ 5 ]. WebDec 18, 2014 · Coherent elastic excitation of spin waves December 2014 arXiv Authors: Akashdeep Kamra Universidad Autónoma de Madrid Hedyeh Keshtgar Institute for …

Excitation of coherent propagating spin waves by pure spin cur…

WebLongitudinal and surface acoustic waves are measured in BK-7 glass, diamond, and Bi4Ge3O12; in the latter material, the excitation of a coherent optical phonon mode is also observed. WebJul 29, 2024 · Fig. 1: All-optical generation and detection of coherent AFM spin waves. a, Schematic of the generation of propagating AFM spin waves after optical pumping. The … bruiser brothers

Frequency and wavenumber selective excitation of spin waves …

WebJul 14, 2024 · Using the experimental results and equations of motion for spins, we show that the mechanism of the spin excitation above and below the Morin point relies on a magnetic-dipole interaction of the THz magnetic field with spins, and the mechanism implies that the efficiency of the coupling is proportional to the time derivative of the magnetic field. WebDec 2, 2024 · In the emerging field of magnonics, spin waves are foreseen as signal carriers for future spintronic information processing and communication devices, owing to both the very low power losses and a high device miniaturization potential predicted for short-wavelength spin waves. WebNov 1, 2024 · The conditions for the parametric instability of magnons under the action of purely elastic pumping, which are modes of a composite acoustic wave resonator containing ferrimagnet and... ews engineering \\u0026 construction services

Magnetic domain walls as broadband spin wave and elastic …

Acoustic excitation and electrical detection of spin waves and spin ...

WebCoherent elastic excitation of spin waves Akashdeep Kamra1, Hedyeh Keshtgar2, Peng Yan1, and Gerrit E. W. Bauer3;1 1Kavli Institute of NanoScience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands 2Institute for Advanced Studies in Basic Science, 45195 Zanjan, Iran and 3Institute for Materials Research and WPI … WebMar 10, 2024 · Abstract In magnon spintronics is fundamental that magnons can propagate over large distances to allow spin flux or information to be processed. We investigate through micromagnetic simulations... ews estatesWebJan 1, 2024 · Studies of the coupling of elastic waves with other wave excitations, including spin waves, in nanostructures are experiencing a revival, which is mostly due to the … ew server

"WebOct 6, 2011 · We show that the resonant coupling of phonons and magnons can be exploited to generate spin currents at room temperature. Surface acoustic wave (SAW) pulses with a frequency of 1.55 GHz and duration of 300 ns provide coherent elastic waves in a ferromagnetic thin film/normal metal (Co/Pt) bilayer. " - Coherent elastic excitation of spin waves

Coherent elastic excitation of spin waves

Spin pumping with coherent elastic waves - PubMed

Webform of bulk acoustic waves (BAWs), and spin waves, and ac-cordingly the formation of hybrid magneto-elastic waves has been studied extensively already in the 1950s and 1960s. As theoretically suggested by Kittel [5] the excitation of BAWs by spin waves [6] and conversely the excitation of spin waves by BAWs has been demonstrated [7]. WebAug 26, 2024 · The excitation, detection, and utilization of coherent and non-coherent spin waves on various modes in V(TCNE) x is demonstrated and show that the angular momentum carried by microwave-excited coherent spin waves in a V(TCNE) x film can be transferred into an adjacent Pt layer via spin pumping and detected using the inverse …

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WebCOHERENT ELASTIC EXCITATION OF SPIN WAVES PHYSICAL REVIEW B 91, 104409 (2015) whichisnotinvariantunderrotationaboutthezdirection.With constant … WebApr 13, 2024 · The Higgs boson decays too rapidly to be spotted and was a particle with no spin. During the excitation of the Higgs field by the wave phase, both the Higgs bosons …

WebNotably, by tuning the magnitude of an externally applied magnetic field, optically excited surface acoustic waves can selectively excite either the upper or lower branches of a splitting in the nanowire's spin wave spectrum, which micromagnetic simulations indicate to be caused by localization of spin waves in different parts of the nanowire. WebOct 23, 2024 · Using spin-wave tomography (SWaT), we have investigated the excitation and the propagation dynamics of optically excited magnetoelastic waves, i.e., hybridized …

WebPDF - We model the injection of elastic waves into a ferromagnetic film (F) by a nonmagnetic transducer (N). We compare the configurations in which the magnetization … WebJun 1, 2024 · The acoustic waves (AW) and spin waves (SW) coupling, caused by linear magnetostriction, is most significant under the condition of the phase synchronism, i.e. at …

WebJun 1, 2024 · The acoustic waves (AW) and spin waves (SW) coupling, caused by linear magnetostriction, is most significant under the condition of the phase synchronism, i.e. at magnetoelastic resonance (MER). As far as MER frequency generally lies in the gigahertz range [15] the generation of hypersonic AW is required.

WebDec 18, 2014 · Coherent elastic excitation of spin waves. We model the injection of elastic waves into a ferromagnetic film (F) by a non-magnetic transducer (N). We compare … bruiser brody son todayWebJan 4, 2024 · We study femtosecond laser comb driven sustained and coherent spin wave (SW) generation in Permalloy films over a thickness range of d = 40–100 nm. ... C. Dubs, O. Surzhenko, P. Görnert, B. Leven, and B. Hillebrands, “ Spin-wave excitation and propagation in ... and T. Rasing, “ Frequency and wavenumber selective excitation of … ewseta ceo contact detailsWebMay 26, 2024 · uum of spin excitation modes (Fig. 1) [5]. This problem is even more complex when an antiferromagnet is inserted be-tween the spin injector and the spin detector, as the magnetic excitations in antiferromagnets typically have THz frequen- ... ‘‘Spin pumping with coherent elastic waves,’’ ... bruiser builds new worldWebMar 13, 2015 · Coherent elastic excitation of spin waves Akashdeep Kamra, Hedyeh Keshtgar, Peng Yan, and Gerrit E. W. Bauer Phys. Rev. B 91, 104409 – Published 13 March 2015 More PDF HTML Export Citation Abstract We model the injection of elastic waves … bruiser built flatbed priceWebDec 3, 2024 · The simulations show that, despite high Gilbert damping characteristic of cobalt ferrite, the injected elastic waves with frequencies around the resonance frequency of coherent magnetization precession in unstrained CoFe2O4film efficiently generate spin waves in this ferrimagnetic insulator. ewseta discretionary grantsWebOct 23, 2024 · By using time-resolved SWaT, we reveal the excitation dynamics of magnetoelastic waves through coherent-energy transfer between optically-excited pure-elastic waves and spin waves via magnetoelastic coupling. ewsever.exeWebAug 26, 2024 · The excitation, detection, and utilization of coherent and non-coherent spin waves on various modes in V(TCNE) x is demonstrated and show that the angular momentum carried by microwave-excited coherent spin waves in a V(TCNE) x film can be transferred into an adjacent Pt layer via spin pumping and detected using the inverse … bruiser by neal shusterman pdf