Coherent elastic excitation of spin waves

Author: dpye

August undefined, 2024

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. WebDec 18, 2014 · Coherent elastic excitation of spin waves Akashdeep Kamra, Hedyeh Keshtgar, Peng Yan, Gerrit E. W. Bauer We model the injection of elastic waves into a ferromagnetic film (F) by a non-magnetic transducer (N). We compare the configurations in which the magnetization is normal and parallel to the wave propagation.

[1412.5820] Coherent elastic excitation of spin waves

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]. 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 … flr64t6wm

Coherent elastic excitation of spin waves – arXiv Vanity

WebDec 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. WebMar 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 … 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 … greendale village shopping centre

Frequency and wavenumber selective excitation of spin …

[1412.5820v2] Coherent elastic excitation of spin waves

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. WebMay 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,’’ ... flr80wWebCOHERENT ELASTIC EXCITATION OF SPIN WAVES PHYSICAL REVIEW B 91, 104409 (2015) whichisnotinvariantunderrotationaboutthezdirection.With constant … flr 64t6w

"WebSep 20, 2024 · Unidirectional propagation of spin waves is key to the realization of magnonic logic devices. Here, the authors experimentally demonstrate excitations of unidirectional exchange spin waves by a nanoscale magnetic grating fabricated on an ultrathin yttrium iron garnet film. The authors explain and model the nearly perfect … " - Coherent elastic excitation of spin waves

Coherent elastic excitation of spin waves

WebAug 28, 2006 · Elastic differential, integral and momentum transfer cross sections are obtained by summing over rotationally elastic and rotationally inelastic cross sections for rotor states up to J = 4. The excitation cross sections from the ground state of C 3 , at its equilibrium geometry, to its nine low-lying electronically excited states are also ... WebFrequency and wavenumber selective excitation of spin waves through coherent energy transfer from elastic waves . Abstract . Using spin-wave tomography (SWaT), we have investigated the excitation and the propagation dynamics of optically excited magnetoelastic waves, i.e., hybridized modes of spin waves and elastic waves, in a …

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WebMar 21, 2024 · In the emerging field of magnonics, spin waves are foreseen as signal carriers for future spintronic information processing and communication devices, owing to … WebDec 18, 2014 · [1412.5820v2] Coherent elastic excitation of spin waves We model the injection of elastic waves into a ferromagnetic film (F) by a non-magnetic transducer (N). …

WebJul 14, 2024 · Spin waves may be generated with varying degrees of coherency, depending on the excitation method, and transport mechanisms range from diffusive to ballistic. In this Review, we address... 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.

WebHere we study the excitation and propagation of MEWs in a ferromagnet by a non-magnetic transducer that injects elastic waves into the ferromagnet. MEWs are generated at the … 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 is normal and parallel to the wave propagation. The lack of axial symmetry in the former results in the emergence of evanescent interface states. We compute the energy-flux …

WebOct 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.

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. flr870t6wWebWe model the injection of elastic waves into a ferromagnetic film (F) by a nonmagnetic transducer (N). We compare the configurations in which the magnetization is normal and parallel to the wave propagation. The lack of axial symmetry in the former results in the emergence of evanescent interface states. flr64t6w 長さ flr6wWebOct 23, 2024 · Using spin-wave tomography (SWaT), we have investigated the excitation and the propagation dynamics of optically excited magnetoelastic waves, i.e., hybridized … flr6yc2x 2*0.5WebApr 7, 2024 · The non-resonant continuous wave laser excitation of a polariton BEC in an individual trap of a trap array, induces coherent mechanical self-oscillation, leading to the formation of spectral ... greendale walmart shootingWebAug 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 … flr757t6wWebJan 28, 2016 · Here, we experimentally demonstrate efficient excitation and directional propagation of coherent spin waves generated by pure spin current. We show that this … flr64t6ex-ww