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Magnetic emergent crystals are periodic alignment of "particle-like" spin textures that emerge in magnets. Instead of focusing on an individual spin or a macroscopic magnetization field, we analyze the dynamical behaviors of these novel…

Mesoscale and Nanoscale Physics · Physics 2019-05-13 Yangfan Hu

This paper discusses the physics of magnetoelasticity and magnetoelastic waves as well as their mathematical description. Magnetoelastic waves occur as a result of strong coupling between spin waves and elastic waves in magnetostrictive…

Mesoscale and Nanoscale Physics · Physics 2020-03-30 Frederic Vanderveken , Florin Ciubotaru , Christoph Adelmann

Spin waves are promising candidates for information carriers in advanced technology. The interactions between spin waves and acoustic waves in magnetic nanostructures are of much interest because of their potential application for spin wave…

Applied Physics · Physics 2019-03-20 Piotr Graczyk , Jarosław Kłos , Maciej Krawczyk

We study propagation of ultrasonic waves through a ferromagnetic medium with special attention to the boundary conditions at the interface with an ultrasonic actuator. In analogy to charge and spin transport in conductors, we formulate the…

Mesoscale and Nanoscale Physics · Physics 2013-11-04 Akashdeep Kamra , Gerrit E. W. Bauer

Recent experiments demonstrated generation of spin currents by ultrasound. We can understand this acoustically induced spin pumping in terms of the coupling between magnetization and lattice waves. Here we study the parametric excitation of…

Mesoscale and Nanoscale Physics · Physics 2015-06-18 Hedyeh Keshtgar , Malek Zareyan , Gerrit E. W. Bauer

The characteristics of confined magnetoelastic waves in nanoscale ferromagnetic magnetostrictive waveguides have been investigated by a combination of analytical and numerical calculations. The presence of both magnetostriction and inverse…

The spectrum of hybrid electromagnetic-spin-acoustic waves for magnetic having conical spiral ferromagnetic structure defined by heterogeneous exchange and relativistic interactions have been received. The possibility of resonant…

Other Condensed Matter · Physics 2012-12-03 Igor V. Bychkov , Dmitry A. Kuzmin , Vladimir G. Shavrov

Using spatial light interference of ultrafast laser pulses, we generate a lateral modulation in the magnetization profile of an otherwise uniformly magnetized film, whose magnetic excitation spectrum is monitored via the coherent and…

Mesoscale and Nanoscale Physics · Physics 2019-02-26 C. L. Chang , S. Mieszczak , M. Zelent , V. Besse , U. Martens , R. R. Tamming , J. Janusonis , P. Graczyk , M. Münzenberg , J. W. Kłos , R. I. Tobey

We have shown that the size of the magnetization step due to resonant spin tunneling in a molecular magnet can be strongly affected by sound. The transverse acoustic wave can also generate macroscopic quantum beats of the magnetization…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Gwang-Hee Kim , E. M. Chudnovsky

A magnetic particle with atomic spins ordered in an unstable direction is an example of a false vacuum that decays via excitation of internal spin waves. Coupled evolution of the particle's magnetization (or the vacuum state) and spin…

Statistical Mechanics · Physics 2008-05-05 D. A. Garanin , H. Kachkachi , L. Reynaud

Hybrid elastic and spin waves hold promises for energy-efficient and versatile generation and detection of magnetic signals, with potentially long coherence times. Here we report on the combined elastic and magnetic dynamics in a…

Mesoscale and Nanoscale Physics · Physics 2024-06-26 P. Carrara , M. Brioschi , R. Silvani , A. O. Adeyeye , G. Panaccione , G. Gubbiotti , G. Rossi , R. Cucini

The spin effects on electromagnetic waves in a strongly magnetized plasma with rare collisions is considered with the help of relativistic kinetic equations, which takes into account the electron spin dynamics in the selfconsistent electric…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. N. Oraevsky , V. B. Semikoz , A. S. Volokitin

We have investigated co-directional and contra-directional couplings between spin wave and acoustic wave in one-dimensional periodic structure (magphonic crystal). The system consists of two ferromagnetic layers alternating in space. We…

Other Condensed Matter · Physics 2017-07-12 Piotr Graczyk , Maciej Krawczyk

The magnetization dynamics induced by standing elastic waves excited in a thin ferromagnetic film is described with the aid of micromagnetic simulations taking into account the magnetoelastic coupling between spins and lattice strains. The…

Mesoscale and Nanoscale Physics · Physics 2016-11-10 A. V. Azovtsev , N. A. Pertsev

By numerically solving the equations of motion for atomic spins we show that internal spin-wave processes in large enough magnetic particles, initially in unstable states, lead to complete magnetization reversal and thermalization. The…

Other Condensed Matter · Physics 2012-01-10 D. A. Garanin , H. Kachkachi

The spin-electron-acoustic waves (sometimes called the spin-plasmons) can be found in degenerate electron gas if the spin-up electrons and spin down electrons move relatively each other. Here, we suggest relativistic hydrodynamics with the…

Plasma Physics · Physics 2022-12-14 Pavel A. Andreev

One of the most fundamental forms of magnon-phonon interaction is an intrinsic property of magnetic materials, the "magnetoelastic coupling". This particular form of interaction has been the basis for describing magnetic materials and their…

General phenomenological theory of magnetic spin waves in ferromagnetic media is originally reformulated and applied to analysis of magnetostatic waves in films and plates with arbitrary nisotropy under arbitrary external field. Exact…

Other Condensed Matter · Physics 2012-04-03 Yu. E. Kuzovlev , Yu. V. Medvedev , N. I. Mezin

Surface acoustic waves (SAWs) traveling on the surface of a piezoelectric crystal can, through the magnetoelastic interaction, excite traveling spin-wave resonance in a magnetic film deposited on the substrate. This spin-wave resonance in…

Materials Science · Physics 2016-09-29 Praveen G. Gowtham , Dominic Labanowski , Sayeef Salahuddin

This article reviews the static and dynamic properties of spontaneous superstructures formed by electrons. Representations of such electronic crystals are charge density waves and spin density waves in inorganic as well as organic low…

Strongly Correlated Electrons · Physics 2013-07-04 Pierre Monceau
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