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相关论文: Spin wave propagation in ferrimagnetic $Gd_{x}Co_{…

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We determined the spin-transport properties of Pd and Pt thin films by measuring the increase in ferromagnetic resonance damping due to spin-pumping in ferromagnetic (FM)-nonferromagnetic metal (NM) multilayers with varying NM thicknesses.…

介观与纳米尺度物理 · 物理学 2015-06-17 C. T. Boone , J. M. Shaw , H. T. Nembach , T. J. Silva

We report on coherent propagation of antiferromagnetic (AFM) spin waves over a long distance ($\sim$10 $\mu$m) at room temperature in a canted AFM $\alpha$-Fe$_2$O$_3$ with the Dzyaloshinskii-Moriya interaction (DMI). Unprecedented high…

We study the frequency non-reciprocity of the spin waves in symmetric CoFeB/Ru/CoFeB synthetic antiferromagnets stacks set in the scissors state by in-plane applied fields. Using a combination of Brillouin Light Scattering and propagating…

材料科学 · 物理学 2026-03-23 F. Millo , J. -P. Adam , C. Chappert , J. -V. Kim , A. Mouhoub , A. Solignac , T. Devolder

The source of spin-wave resonance (SWR) in thin films of the ferromagnetic semiconductor (Ga,Mn)As is still under debate: does SWR stem from the \emph{surface} anisotropy (in which case the surface inhomogeneity (SI) model would apply), or…

材料科学 · 物理学 2014-01-09 H. Puszkarski , P. Tomczak

In the present work we theoretically analyze the contribution from a transverse Fermi-liquid collective mode to the transmission of electromagnetic waves through a thin film of a clean metal in the presence of a strong external magnetic…

材料科学 · 物理学 2007-10-23 Natalya A. Zimbovskaya

The resistivity model as a function of temperature and ionization energy (doping) is derived with further confinements from spin-disorder scattering in ferromagnetic phase. Magnetization and polaronic effects capture the mechanism of both…

材料科学 · 物理学 2007-05-23 Andrew Das Arulsamy

Here, we investigate the spin waves in room-temperature van der Waals ferromagnet $(\rm Fe_{0.78}Co_{0.22})_{5}GeTe_{2}$ by utilizing Brillouin light scattering technique. The spin wave dispersion in flakes of different thicknesses shows…

介观与纳米尺度物理 · 物理学 2025-11-21 Guofu Xu , Feihao Pan , Jiyang Ou , Wenjun Ma , Xu Zhang , Xiling Li , Guoqiang Yu , Peng Cheng , Hongjun Xu , Guozhi Chai

Excitation of magnons or spin-waves driven by nominally unpolarized transport currents in point contacts of normal and ferromagnetic metals is probed by irradiating the contacts with microwaves. Two characteristic dynamic effects are…

材料科学 · 物理学 2009-11-13 O. P. Balkashin , V. V. Fisun , I. K. Yanson , L. Yu. Triputen , A. Konovalenko , V. Korenivski

Spin wave frequencies are observed in ultra-thin Fe/GaAs(100) films at temperatures where the spontaneous zero field magnetization is zero. The films exhibit good cyrstalline structure, and the effect of magnetic anisotropies is apparent…

材料科学 · 物理学 2009-11-11 R. L. Stamps , A. Stollo , M. Madami , S. Tacchi , G. Carlotti , G. Gubbiotti , M. Fabrizioli , J. Fujii

In the recent letter [1] by H. Ikeda and Y. Ohashi, a new, very attractive idea is proposed for the explanation of the micromagnetism in U-based heavy fermion compounds. For this sake a nontrivial spin density wave (d-SDW) is introduced.…

强关联电子 · 物理学 2009-10-31 M. Kiselev , F. Bouis

Spin dynamics in ferromagnetic $p$-(Ga,Mn)As ($x$ = 0.011, $T_{C}$ = 30 K) has been studied by carefully comparing the decay time of the photo-induced reflectivity change with the transient behavior of polar Kerr rotation induced by…

材料科学 · 物理学 2007-05-23 Y. Mitsumori , A. Oiwa , T. Slupinski , H. Maruki , Y. Kashimura , F. Minami , H. Munekata

We performed nuclear magnetic resonance (NMR) measurements to investigate the evolution of spin-density-wave (SDW) and superconducting (SC) states upon electron doping in CaFe_{1-x}Co_{x}AsF, which exhibits an intermediate phase diagram…

超导电性 · 物理学 2012-10-04 S. Tsutsumi , N. Fujiwara , S. Matsuishi , H. Hosono

The rare-earth nitrides form a series of structurally simple $intrinsic$ ferromagnetic semiconductors, a rare class of both fundamental interest and application potential. Within the series there is a wide range of magnetic properties…

Herein, we study the spin-wave dispersion and dissipation in a ferromagnetic insulator--normal metal--ferromagnetic insulator system. Long-range dynamic coupling because of spin pumping and spin transfer lead to collective magnetic…

介观与纳米尺度物理 · 物理学 2014-11-25 Hans Skarsvag , Andre Kapelrud , Arne Brataas

Long-range spin transport in magnetic systems can be achieved by means of exchange-mediated spin textures with robust topological winding -- a phenomenon referred to as spin superfluidity. Its experimental signatures have been discussed in…

Magnetic dipolar mode or magnetostatic (MS) oscillations in ferrite samples have the wavelength much smaller than the electromagnetic wavelength at the same frequency and, at the same time, much larger than the exchange interaction spin…

介观与纳米尺度物理 · 物理学 2009-11-10 E. O. Kamenetskii , R. Shavit , M. Sigalov

We study anisotropic antiferromagnetic one-layer films with dipolar and nearest-neighbor exchange interactions. We obtain a unified phase diagram as a function of effective uniaxial D_e and quadrupolar C anisotropy constants. We study in…

统计力学 · 物理学 2015-06-25 J. J. Alonso , J. F. Fernandez

We use general hydrodynamic equations to determine the long-wavelength spin excitations in isotropic antiferromagnets in the presence of a homogeneous magnetization. The latter may be induced, such as in antiferromagnets in an external…

强关联电子 · 物理学 2017-06-07 T. R. Kirkpatrick , D. Belitz

We explore the quantum pseudospin-1 pyrochlore magnet featuring Fe$^{2+}$-based spinel oxides that addresses the formation of amplitude-modulated spin-density waves. We propose that the relatively small spin-orbit coupling and the small…

强关联电子 · 物理学 2025-08-05 Hiroki Nakai , Chisa Hotta

In this work, we study experimentally by broadband ferromagnetic resonance measurements, the dependence of the spin-wave excitation spectra on the magnetic applied field in CoFeB meander-shaped films. Two different orientations of the…

介观与纳米尺度物理 · 物理学 2021-12-08 A. V. Sadovnikov , G. Talmelli , G. Gubbiotti , E. N. Beginin , S. Sheshukova , S. A. Nikitov , C. Adelmann , F. Ciubotaru