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This paper studies numerically how the signal detector arrangement influences the performance of reservoir computing using spin waves excited in a ferrimagnetic garnet film. This investigation is essentially important since the input…

Emerging Technologies · Computer Science 2021-05-24 Takehiro Ichimura , Ryosho Nakane , Gouhei Tanaka , Akira Hirose

Developing the field of neuromorphic quantum computing necessitates designing scalable quantum memory devices. Here, we propose a superconducting quantum memory device in the microwave regime, termed as a microwave quantum memcapacitor. It…

Surface Acoustic Wave (SAW) devices featuring Aluminum Scandium Nitride (AlScN) on a 4H-Silicon Carbide (SiC) substrate, offer a unique blend of high sound velocity, low thermal resistance, substantial piezoelectric response, simplified…

Applied Physics · Physics 2023-11-16 Xingyu Du , Nishant Sharma , Zichen Tang , Chloe Leblanc , Deep Jariwala , Roy H. Olsson

The increasing capacity of modern computers, driven by Moore's Law, is accompanied by smaller noise margins and higher error rates. In this paper we propose a memory device, consisting of a ring of two identical overdamped bistable…

Adaptation and Self-Organizing Systems · Physics 2009-11-05 S. A. Ibáñez , P. I. Fierens , G. A. Patterson , R. P. J. Perazzo , D. F. Grosz

Time-multiplexed Spinwave Ising Machines (SWIMs) have unveiled a route towards miniaturized, low-cost, and low-power solvers of combinatorial optimization problems. While the number of supported spins is limited by the nonlinearity of the…

Mesoscale and Nanoscale Physics · Physics 2023-11-14 Artem Litvinenko , Roman Khymyn , Roman Ovcharov , Johan Åkerman

Coupled networks of mass-spring resonators have attracted growing attention across multiple fundamental and applied research directions, including reservoir computing for artificial intelligence. This has led to the exploration of platforms…

Mesoscale and Nanoscale Physics · Physics 2026-01-08 Andrea Grimaldi , Davi R. Rodrigues , Andrea Meo , Francesca Garescì , Giovanni Finocchio

Elastic waves propagating in piezoelectric materials are accompanied by a time-varying electric potential, which is of critical importance for acousto-electronic applications. The spatial mapping of such a potential at microwave frequencies…

Mesoscale and Nanoscale Physics · Physics 2018-06-25 Lu Zheng , Di Wu , Xiaoyu Wu , Keji Lai

We show that, under an appropriate out-of-plane static magnetic field, nuclear spins in a thin specimen on a surface acoustic wave (SAW) cavity can be resonantly excited and detected through spin-rotation coupling. Since such a SAW cavity…

Mesoscale and Nanoscale Physics · Physics 2020-11-18 Koji Usami , Kazuyuki Takeda

A non-magnetic layer can inject spin-polarized currents into an adjacent ferromagnetic layer via spin vorticity coupling (SVC), inducing spin wave resonance (SWR). In this work, we present the theoretical model of SWR generated by…

Applied Physics · Physics 2023-04-19 Mingxian Huang , Wenbin Hu , Huaiwu Zhang , Feiming Bai

The authors combine acousto-optoelectric and multi-channel photon correlation spectroscopy to probe spatio-temporal carrier dynamics induced by a piezoelectric surface acoustic wave (SAW). The technique is implemented by combining…

Mesoscale and Nanoscale Physics · Physics 2021-09-08 Maximilian M. Sonner , Daniel Rudolph , Gregor Koblmüller , Hubert J. Krenner

Machine learning (ML) has found widespread application over a broad range of important tasks. To enhance ML performance, researchers have investigated computational architectures whose physical implementations promise compactness,…

Signal Processing · Electrical Eng. & Systems 2022-06-09 Shukai Ma , Thomas M. Antonsen , Steven M. Anlage , Edward Ott

It has recently been demonstrated that surface acoustic waves (SAWs) can interact with superconducting qubits at the quantum level. SAW resonators in the GHz frequency range have also been found to have low loss at temperatures compatible…

Surface acoustic wave (SAW) devices are widely used in sensing and biosensing but generally suffer from strong attenuation in liquid environments. Conventional approaches rely on reflectors to reduce these losses, yet these components…

Pulse Compression (PC) active sonar waveforms provide a significant improvement in range resolution over single frequency sinusoidal waveforms also known as Continuous Wave (CW) waveforms. Since their inception in the 1940's, a wide variety…

Signal Processing · Electrical Eng. & Systems 2018-10-01 David A. Hague

Surface Acoustic Waves (SAW) have been utilized to investigate the properties of a two-dimensional electron system, subjected to a perpendicular magnetic field and monochromatic microwave radiation, in the regime where the so-called…

Mesoscale and Nanoscale Physics · Physics 2020-03-25 Benedikt Friess , Ivan A. Dmitriev , Vladimir Umansky , Loren Pfeiffer , Ken West , Klaus von Klitzing , Jurgen H. Smet

We present systematic measurements of the quality factors of surface acoustic wave (SAW) resonators on ST-X quartz in the gigahertz range at a temperature of $10 \, \textrm{mK}$. We demonstrate a internal quality factor $Q_\mathrm{i}$…

Quantum Physics · Physics 2017-03-16 R. Manenti , M. J. Peterer , A. Nersisyan , E. B. Magnusson , A. Patterson , P. J. Leek

Spin-orbit torque (SOT) can drive sustained spin wave (SW) auto-oscillations in a class of emerging microwave devices known as spin Hall nano-oscillators (SHNOs), which have highly non-linear properties governing robust mutual…

The interaction of surface acoustic waves (SAW) with $p$-type Si/Si$_{0.87}$Ge$_{0.13}$ heterostructures has been studied for SAW frequencies of 30-300 MHz. For temperatures in the range 0.7$<T<$1.6 K and magnetic fields up to 7 T, the SAW…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 I. L. Drichko , A. M. Diakonov , I. Yu. Smirnov , G. O. Andrianov , O. A. Mironov , M. Myronov , D. R. Leadley , T. E. Whall

The torque generated by the transfer of spin angular momentum from a spin-polarized current to a nanoscale ferromagnet can switch the orientation of the nanomagnet much more efficiently than a current-generated magnetic field, and is…

Other Condensed Matter · Physics 2009-11-13 Y. -T. Cui , J. C. Sankey , C. Wang , K. V. Thadani , Z. -P. Li , R. A. Buhrman , D. C. Ralph

We investigate the propagation of surface acoustic waves (SAWs) in a layered half-space system comprising a continuous, sub-wavelength-thick layer weakly adhering to a substrate. Using finite element simulations, we demonstrate that this…

Applied Physics · Physics 2026-02-25 Martin Robin , Thomas Dehoux , Maroun Abi Ghanem
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