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We study an ensemble of strongly coupled electrons under continuous microwave irradiation interacting with a dissipative environment, a problem of relevance to the creation of highly polarized non-equilibrium states in nuclear magnetic…

In the framework of magnonics all-optical femtosecond laser experiments are used to study spin waves and their relaxation paths. Magnonic crystal structures based on antidots allow the control over the spin-wave modes. In these…

介观与纳米尺度物理 · 物理学 2012-08-28 Benjamin Lenk , Fabian Garbs , Henning Ulrichs , Nils Abeling , Markus Münzenberg

We investigate spin-wave modes in confined ferromagnetic resonators with spherical and cylindrical geometries across the exchange-dominated, dipole-exchange, and dipolar interaction regimes. Starting from the linearized…

介观与纳米尺度物理 · 物理学 2026-03-30 Fedor Shuklin , Khristina Albitskaya , Sergei Solovyov , Alexander Chernov , Mihail Petrov

The secular dynamics of a non-relativistic charged particle in an electromagnetic wave can be described by the ponderomotive potential. Although ponderomotive electron-laser interactions at relativistic velocities are important for emerging…

We have studied microwave photoresistance in a two-dimensional electron system subject to two radiation fields (frequencies $\omega_1$ and $\omega_2$) using quantum kinetic equation. We have found that when $\omega_2/\omega_1= 1 + 2/N$,…

介观与纳米尺度物理 · 物理学 2013-12-12 Q. Shi , M. Khodas , A. Levchenko , M. A. Zudov

The phase shift analysis for determination of the 2S1/2 resonance at 1.5 MeV was carried out on the basis of the known experimental measurements of the excitation functions of the p14C elastic scattering at four angles from 90 to 165 grad.…

核理论 · 物理学 2017-11-27 S. B. Dubovichenko , A. V. Dzhazairov-Kakhramanov

We introduce a new type of binary magnonic crystal, where Ni$_{80}$Fe$_{20}$ nanodots of two different sizes are diagonally connected forming a unit and those units are arranged in a square lattice. The magnetization dynamics of the sample…

介观与纳米尺度物理 · 物理学 2020-02-26 Nikita Porwal , Koustuv Dutta , Sucheta Mondal , Samiran Choudhury , Jaivardhan Sinha , Anjan Barman , P. K. Datta

We derive analytic forms for spin waves in pyrochlore magnets with dipolar-octupolar interactions, such as ${\rm Nd}_2{\rm Zr}_2{\rm O}_7$. We obtain full knowledge of the diagonalized magnonic Hamiltonian within the linear spin wave…

强关联电子 · 物理学 2021-05-26 I. A. Assi , S. H. Curnoe

The dynamical response of an Ising ferromagnet to a plane polarised standing magnetic field wave is modelled and studied here by Monte Carlo simulation in two dimensions. The amplitude of standing magnetic wave is modulated along the…

统计力学 · 物理学 2016-08-08 Ajay Halder , Muktish Acharyya

We perform an analysis of the experimentally known temperature dependence of the staggered magnetization in the antiferromagnetic phase. This analysis allows us to put an upper limit on the unknown value of the spin wave velocity along the…

强关联电子 · 物理学 2009-08-02 Andrew Ong , Goetz S. Uhrig , Oleg P. Sushkov

Analyzing spin transport of quasi-2D electrons gas moving through a semiconductor wave guide subject to a sectionally homogeneous tilted magnetic field, we found well-defined selection rules for resonant and antiresonant spin carrier…

介观与纳米尺度物理 · 物理学 2009-11-13 J. L. Cardoso , P. Pereyra

We use the phase-resolved imaging to directly study the nonlinear modification of the wavelength of spin waves propagating in 100-nm thick, in-plane magnetized YIG waveguides. We show that, by using moderate microwave powers, one can…

介观与纳米尺度物理 · 物理学 2022-03-09 S. R. Lake , B. Divinskiy , G. Schmidt , S. O. Demokritov , V. E. Demidov

We report broadband spectroscopy and numerical analysis by which we explore propagating spin waves in a magnetic bilayer consisting of a 23 nm thick permalloy film deposited on 130 nm thick $Y_{3}Fe_{5}O_{12}$. In the bilayer, we observe a…

应用物理 · 物理学 2019-04-03 Kyongmo An , Vinayak Bhat , Michal Mruczkiewicz , Carsten Dubs , Dirk Grundler

We report the possibility of achieving an order of magnitude reduction in the energy dissipation needed to write bits in perpendicular magnetic tunnel junctions (p-MTJs) by simulating the magnetization dynamics under a combination of…

介观与纳米尺度物理 · 物理学 2019-10-02 Austin Roe , Dhritiman Bhattacharya , Jayasimha Atulasimha

Spin waves (SWs) and their quanta, magnons, are essential to achieving low-power information transmission in future spintronic devices. Backward volume magnetostatic spin waves (BVMSWs) exhibit a unique dispersion relationship: one…

应用物理 · 物理学 2025-05-06 Xuhui Su , Dawei Wang , Shaojie Hu

This paper presents a new approach for tackling the shift-invariance problem in the discrete Haar domain, without trading off any of its desirable properties, such as compression, separability, orthogonality, and symmetry. The paper…

计算机视觉与模式识别 · 计算机科学 2017-05-23 Mais Alnasser , Hassan Foroosh

The dynamical response of spin-S (S=1, 3/2, 2, 3) Ising ferromagnet to the plane propagating wave , standing magnetic field wave and uniformly oscillating field with constant frequency are studied separately in two dimensions by extensive…

统计力学 · 物理学 2017-12-15 Ajay Halder , Muktish Acharyya

Magnetic anisotropy, spin wave (SW) excitation and exchange stiffness constant of amorphous FeTaC ($d$ = 20-200 nm) films were studied as a function of thickness using micro-strip ferromagnetic resonance (MS-FMR) technique. The MS-FMR…

介观与纳米尺度物理 · 物理学 2015-11-09 B. Samantaray , Akhilesh Kr. Singh , A. Perumal , P. Mandal

Recent experimental work has demonstrated optical control of spin wave emission by tuning the shape of the optical pulse (Satoh et al.\ Nature Photonics, 6, 662 (2012)). We reproduce these results and extend the scope of the control by…

介观与纳米尺度物理 · 物理学 2017-09-01 L. J. A. van Tilburg , F. J. Buijnsters , A. Fasolino , T. Rasing , M. I. Katsnelson

At present, many works about magneto-hydrodynamics wave diagnostics in magnetic flux tubes are based on some pioneer works not considering the contributions of magnetic twist. Other works considered the effect on magneto-hydrodynamics…

太阳与恒星天体物理 · 物理学 2021-06-23 Wei Wu , Robert Sych , Jie Chen , Jiang-tao Su