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Nonreciprocal spin-wave propagation in bilayer ferromagnetic systems has attracted significant attention due to its potential to precisely quantify material parameters as well as for applications in magnonic logic and information…

介观与纳米尺度物理 · 物理学 2025-05-07 C. Heins , V. Iurchuk , O. Gladii , L. Körber , A. Kákay , J. Fassbender , K. Schultheiss , H. Schultheiss

Propagation of backward magnetostatic surface spin waves (SWs) in exchange coupled Co/FeNi bilayers are studied by using Brillouin light scattering (BLS) technique. Two types of SWs modes were identified in our BLS measurements. They are…

介观与纳米尺度物理 · 物理学 2020-06-11 Wenjie Song , Xiansi Wang , Wenfeng Wang Changjun Jiang , Xiangrong Wang , Guozhi Chai

We report results of micro-Brillouin-Mandelstam light scattering spectroscopy of thermal magnons in the two-phase synthetic multiferroic structure consisting of a piezoelectric (PMN-PT) substrate and a Ni thin film with the thickness of 64…

Magnetic skyrmions are regarded as promising information candidates in future spintronic devices, which have been investigated theoretically and experimentally in isotropic system. Recently, the sta- bilization of antiskyrmions in the…

介观与纳米尺度物理 · 物理学 2018-10-08 Chengkun Song , Chendong Jin , Haiyan Xia , Jinshuai Wang , Yunxu Ma , Jianbo Wang , Qingfang Liu

Motivated by possible spintronics applications in antiferromagnets, it was recently observed that symmetry admits magnets that combine attractive features of both ferromagnets and antiferromagnets. These systems, dubbed altermagnets, have…

Altermagnets, a unique class of magnetic materials that combines features of both ferromagnets and antiferromagnets, have garnered attention for their potential in spintronics and magnonics. While the electronic properties of altermagnets…

We demonstrate using micromagnetic simulations and a theoretical model that a gradient in the saturation magnetization ($M_s$) of a perpendicularly magnetized ferromagnetic film induces a non-reciprocal spin wave propagation and,…

其他凝聚态物理 · 物理学 2021-04-14 Pablo Borys , Oleg Kolokoltsev , Naser Qureshi , Martin L. Plumer , Theodore L. Monchesky

We report on the observation of reverse Doppler effect in backward spin waves reflected off of surface acoustic waves. The spin waves are excited in a yttrium iron garnet (YIG) film. Simultaneously, acoustic waves are also generated. The…

其他凝聚态物理 · 物理学 2011-07-06 A. V. Chumak , P. Dhagat , A. Jander , A. A. Serga , B. Hillebrands

Pulsed current-induced magnetization reversal is investigated in the layer of (Ga,Mn)(Bi,As) dilute ferromagnetic semiconductor (DFS) epitaxially grown under tensile misfit strain causing perpendicular magnetic anisotropy in the layer. The…

Brillouin Light Scattering is a powerful technique to measure the microwave excitations present in a magnetic system. In microfocused mode, the light is focused on the sample using a microscope objective. This accelerates substantially the…

介观与纳米尺度物理 · 物理学 2025-06-30 Nessrine Benaziz , Thibaut Devolder , Jean-Paul Adam

We study the roton-like dip in the magnon dispersion at the boundary of the Brillouin zone in the isotropic S=1/2 Heisenberg quantum antiferromagnet. This high-energy feature is sometimes seen as indication of a fractionalization of the…

强关联电子 · 物理学 2015-06-15 Goetz S. Uhrig , Kingshuk Majumdar

We report the collective magnetism of the metallic altermagnet CrSb. Magnetic susceptibility and polarized neutron diffraction measurements show that CrSb is a perfectly compensated Ising altermagnet below a N\'eel temperature of $T_N =…

In the emerging field of magnonics, spin waves are considered for information processing and transmission at high frequencies. Towards this end, the manipulation of propagating spin waves in nanostructured waveguides for novel functionality…

We present a theoretical and numerical investigation of the role of perpendicular magnetic anisotropy (PMA) in shaping spin-wave (SW) dynamics under low magnetic fields in thin and ultrathin magnetic films. PMA introduces an in-plane torque…

介观与纳米尺度物理 · 物理学 2025-10-29 Nikodem Leśniewski , Yuliya S. Dadoenkova , Florian F. L. Bentivegna , Paweł Gruszecki

We investigate magnetization dynamics in a spin-Hall oscillator using a direct current measurement as well as conventional microwave spectrum analysis. When the current applies an anti-damping spin-transfer torque, we observe a change in…

介观与纳米尺度物理 · 物理学 2016-05-25 S. Langenfeld , V. Tshitoyan , Z. Fang , A. Wells , T. A. Moore , A. J. Ferguson

Magnetostatic surface spin wave (MSSW) solitons hold great promise for magnonic information processing, but their existence has long been debated. In this work, we resolve this issue by advanced time-resolved Brillouin light scattering…

介观与纳米尺度物理 · 物理学 2025-11-21 Simin Pang , Zhengyi Li , Ziyu Wang , Yanpei Lv , Feilong Song , Peng Yan , Jun Zhang

We investigated the spin-wave propagation in a micro-structured yttrium iron garnet waveguide of $40$ nm thickness. Utilizing spatially-resolved Brillouin light scattering microscopy, an exponential decay of the spin-wave amplitude of…

We report on the theoretical prediction of asymmetric edge spin waves, propagating in opposite directions on the edges of honeycomb nanoribbons with zigzag and bearded edges boundaries. The simultaneous propagation of edge spin waves in the…

应用物理 · 物理学 2019-04-29 Doried Ghader , Antoine Khater

When a beam of light is laterally confined, its field distribution can exhibit points where the local magnetic and electric field vectors spin in a plane containing the propagation direction of the electromagnetic wave. The phenomenon…

光学 · 物理学 2018-05-23 Martin Neugebauer , Jörg Eismann , Thomas Bauer , Peter Banzer

We propose an alternative micromagnetic approach to determine the spin wave dispersion relations in magnonic structures. Characteristic of the method is that a limited area of the system is continuously excited with a spatially uniform…

介观与纳米尺度物理 · 物理学 2014-03-12 Ben Van de Wiele , Federico Montoncello