An analog magnon adder for all-magnonic neurons

Brächer, Thomas; Pirro, Philipp

doi:10.1063/1.5042417

Cited by 65 publications

(42 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nowadays, new technologies allowing, e.g., the fabrication of nanometer-sized structures or the operation in the THz frequency range give, in combination with novel physical phenomena, a new impetus to this field and make the above-discussed advantages accessible for both analog and digital data signal processing. Moreover, magnons also possess the potential to be used in the im-plementation of alternate computing concepts such as factorization units [259], artificial neural networks [260], and the projecting of optical computing concepts onto the nanometer scale [261]. In the following section, the basic ideas behind the standard Boolean logic operations with digital binary data, which are currently the subject of intense theoretical and experimental studies [218], are addressed.…”

Section: Spin-wave Processing Of Binary Datamentioning

confidence: 99%

Recent Trends in Microwave Magnetism and Superconductivity

et al. 2019

View full text Add to dashboard Cite

We review the development trends in microwave magnetism and superconductivity over the last five decades. The review contains the key results of recent studies related to the promising areas of modern magnetism and applied physics – spintronics, magnonics, magnon caloritronics, physics of magnonic crystals, spin-wave logic, and the development of novel micro- and nano-scale magnetic devices. The main achievements in these fields of physics are summarized and generalized.

show abstract

Section: Spin-wave Processing Of Binary Datamentioning

confidence: 99%

Recent Trends in Microwave Magnetism and Superconductivity

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The presence of nonlinear wave phenomena such as solitons has been widely observed and studied in many physical systems [1][2][3][4][5][6][7]. In magnetic materials hosting spin waves (SWs), soliton formation and manipulation are of special interest due to their potential applications in spintronic devices, for example, magnetic memories, microwave elements and neuromorphic computing systems [8][9][10][11]. Indeed, due to the presence of strong nonlinear dynamics via magnons, the quanta of SWs, magnets behave as a rich landscape for soliton formation and utilization.…”

Section: Introductionmentioning

confidence: 99%

Propagating Magnetic Droplet Solitons as Moveable Nanoscale Spin-Wave Sources with Tunable Direction of Emission

et al. 2020

View full text Add to dashboard Cite

Magnetic droplets are strongly nonlinear and localized spin-wave solitons that can be formed in current-driven nanocontacts. Here, we propose a simple way to launch droplets in an inhomogeneous nanoscopic waveguide. We use the drift motion of a droplet and show that in a system with broken translational symmetry, the droplet acquires a linear momentum and propagates. We find that the droplet velocity can be tuned via the strength of the break in symmetry and the size of the nanocontact. In addition, we demonstrate that the launched droplet can propagate up to several micrometers in a realistic system with reasonable damping. Finally, we demonstrate how an annihilating droplet delivers its momentum to a highly nonreciprocal spin-wave burst with a tunable wave vector with nanometer wavelengths. Such a propagating droplet can be used as a moveable spin-wave source in nanoscale magnonic networks. The presented method enables full control of the spin-wave emission direction, which can largely extend the freedom to design integrated magnonic circuits with a single spin-wave source.

show abstract

“…[1][2][3]. These effects are of great technological interest, as they are involved in precessional switching [4,5], the response of spin-transfer torque nano-oscillators [6], magnetic nanostructure-based neuromorphic computing [7,8], and exciting prototype devices of magnon-based logic [9] such as the magnon transistor [10], or magnonic directional coupler [11].…”

Section: Introductionmentioning

confidence: 99%

Time- and space-resolved nonlinear magnetoacoustic dynamics

et al. 2020

View full text Add to dashboard Cite

Nonlinear magnetization dynamics are of great interest, being, for instance, leveraged for neuromorphic computing in spin-transfer torque nano-oscillators. Here, we demonstrate how to implement magnetoacoustics to reach this regime, using monochromatic (f saw = 450 MHz) surface acoustic waves traveling on a thin layer of (Ga,Mn)As. By careful tuning of the precession frequency to both f saw and 2 f saw using the magnetic field and temperature, we evidence clear signatures of a nonlinear magnetoacoustic response of the magnetic dynamics using the time-and space-resolved Kerr effect: (i) frequency and wave-vector doubling in time and space, respectively, (ii) quadratic (sublinear) evolution of the precession amplitude at 2 f saw (f saw) with acoustic amplitude, and (iii) resonance field shift. While (i) can be well reproduced by a parametric resonance model where nonlinearities arise solely from the SAW, we show that features (ii) and (iii) also involve intrinsic magnetic nonlinearities. Understanding the conditions leading to these nonlinearities will mean better control of the acoustic-wave-driven magnetization dynamics, in order to implement optimally the wave properties enabled by this approach.

show abstract

An analog magnon adder for all-magnonic neurons

Cited by 65 publications

References 32 publications

Recent Trends in Microwave Magnetism and Superconductivity

Recent Trends in Microwave Magnetism and Superconductivity

Propagating Magnetic Droplet Solitons as Moveable Nanoscale Spin-Wave Sources with Tunable Direction of Emission

Time- and space-resolved nonlinear magnetoacoustic dynamics

Contact Info

Product

Resources

About