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We present the experimental demonstration of the parallel parametric generation of spin-waves in a microscaled yttrium iron garnet waveguide with nanoscale thickness. Using Brillouin light scattering microscopy, we observe the excitation of…

Mesoscale and Nanoscale Physics · Physics 2023-11-01 M. Mohseni , M. Kewenig , R. Verba , Q. Wang , M. Schneider , B. Heinz , F. Kohl , C. Dubs , B. Lägel , A. A. Serga , B. Hillebrands , A. V. Chumak , P. Pirro

We propose a novel type of a spin wave computing device, based on a bilayer structure which includes a bias layer, made from a hard magnetic material and a propagation layer, made from a magnetic material with low damping, for example,…

Applied Physics · Physics 2024-06-19 Kirill Rivkin , Michael Montemorra

We present an experimental investigation of radial spin-wave modes in magnetic nano-disks with a vortex ground state. The spin-wave amplitude was measured using a frequency-resolved magneto optical network analyzer, allowing for…

Mesoscale and Nanoscale Physics · Physics 2015-06-23 M. Helsen , A. Gangwar , J. De Clercq , A. Vansteenkiste , B. Van Waeyenberge

Graphene nanoribbons (GNRs) have been proposed as potential building blocks for field effect transistor (FET) devices due to their quantum confinement bandgap. Here, we propose a novel GNR device concept, enabling the control of both charge…

Mesoscale and Nanoscale Physics · Physics 2017-03-03 Peter Vancso , Imre Hagymasi , Levente Tapaszto

We theoretically show that a temporally oscillating spin-driven electromotive force or voltage with a large DC component can be generated by exciting microwave-active spin-wave modes of a skyrmion crystal confined in a quasi two-dimensional…

Mesoscale and Nanoscale Physics · Physics 2021-08-31 Tatsuya Koide , Akihito Takeuchi , Masahito Mochizuki

We simulate the electron transport in vertical bi-layer nanowire which can be fabricated in molecular beam epitaxy process with lateral confinement potential formed by means of cleaved overgrowth or surface oxidization methods giving…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 T. Chwiej

Spin-torque oscillators are strong candidates as nano-scale microwave generators and detectors. However, because of large amplitude-phase coupling (non-linearity), phase noise is enhanced over other linear auto-oscillators. One way to…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 Muftah Al-Mahdawi , Yusuke Toda , Yohei Shiokawa , Masashi Sahashi

We study dissipative spin-spin coupling in dispersive regime mediated by virtual photons in a microwave cavity. Dissipative coupling between magnetization of each magnetic material and the cavity photons is established by means of two phase…

Mesoscale and Nanoscale Physics · Physics 2019-07-17 Vahram L. Grigoryan , Ke Xia

Nanopillar spin valve devices are typically comprised of two ferromagnetic layers: a reference layer and a free layer whose magnetic orientation can be changed by both an external magnetic field and through the introduction of…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 Richard Choi , J. A. Katine , Stephane Mangin , Eric E. Fullerton

It has recently been shown that electronic transport in zigzag graphene nanoribbons becomes spin-polarized upon application of an electric field across the nanoribbon width. However, the electric fields required to experimentally induce…

Materials Science · Physics 2012-02-06 Bryan M. Wong , Simon H. Ye , Greg O'Bryan

We introduce a new method to construct, within inverse-scattering theory, an energy-independent separable potential capable of reproducing exactly both phase shift and absorption over a predefined energy range. The approach relies on the…

Nuclear Theory · Physics 2024-08-29 H. F. Arellano , N. A. Adriazola

Transmission of microwave spin waves through a microstructured magnonic crystal in the form of a permalloy waveguide of a periodically varying width was studied experimentally and theoretically. The spin wave characteristics were measured…

Mesoscale and Nanoscale Physics · Physics 2011-07-06 A. V. Chumak , P. Pirro , A. A. Serga , M. P. Kostylev , R. L. Stamps , H. Schultheiss , K. Vogt , S. J. Hermsdoerfer , B. Laegel , P. A. Beck , B. Hillebrands

We experimentally demonstrate that the spin-orbit interaction can be utilized for direct electric-field tuning of the propagation of spin waves in a single-crystal yttrium iron garnet magnonic waveguide. Magnetoelectric coupling not due to…

Mesoscale and Nanoscale Physics · Physics 2014-10-08 Xufeng Zhang , Tianyu Liu , Michael E. Flatté , Hong X. Tang

Electron beams can acquire designed phase modulations by passing through nanostructured material phase plates. These phase modulations enable electron wavefront shaping and benefit electron microscopy, spectroscopy, lithography, and…

Applied Physics · Physics 2020-07-07 Yujia Yang , Chung-Soo Kim , Richard G. Hobbs , Phillip D. Keathley , Karl K. Berggren

Efficient manipulation of spin waves (SWs) is considered as one of the promising means for encoding information with low power consumption in next generation spintronic devices. The SW Doppler shift is one important phenomenon by…

Applied Physics · Physics 2023-10-27 Shaojie Hu , Kang Wang , Tai Min , Takashi Kimura

In this brief, we present a low-loss mechanically reconfigurable phase shifter implemented in gap-waveguide technology for mm-wave frequencies. The proposed design gives a practical implementation of tuning elements inside the waveguide…

Signal Processing · Electrical Eng. & Systems 2021-01-06 Á. Palomares-Caballero , A. Alex-Amor , P. Escobedo , J. Valenzuela-Valdés , P. Padilla

Optical phase shifters are extensively used in integrated optics not only for telecom and datacom applications, but also for sensors and quantum computing. While various active solutions have been demonstrated, progress in passive phase…

Polarization switches are of great technological interest because of their many applications in long distance electromagnetic communication (e.g., polarization division multiplexing). Binary bits can be encoded in the two orthogonal…

Mesoscale and Nanoscale Physics · Physics 2025-08-26 Raisa Fabiha , Erdem Topsakal , Supriyo Bandyopadhyay

Tailoring spin coupling to electric fields is central to spintronics and spin-based quantum information processing. We present an optimal micromagnet design that produces appropriate stray magnetic fields to mediate fast electrical spin…

Integrated circuits are a cornerstone of modern information technology, and analog wave-based architectures could enable fast and efficient processing beyond conventional charge electronics. In magnonics, spin waves provide a highly…