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Results are presented for spin-wave dispersions in geometrically frustrated stacked triangular antiferromagnets with a thin film or semi-infinite geometry having either zero, easy-plane, or easy-axis anisotropy. Surface effects on the…

Materials Science · Physics 2009-11-13 E. Meloche , M. L. Plumer , C. M. Pinciuc

We study the spin-transfer torque and magnetoresistance of a ferromagnet$\mid$superconductor$\mid$ferromagnet spin-valve, allowing for an arbitrary magnetization misorientation and treating both s-wave and d-wave symmetries of the…

Superconductivity · Physics 2015-05-13 J. Linder , T. Yokoyama , A. Sudbø

The spin waves and ferromagnetic resonance (FMR) contribution to the spin pumping signal is studied in the Ta/CoFeB interface under different excitation bias fields. Ferromagnetic resonance is excited utilizing a coplanar waveguide and a…

Mesoscale and Nanoscale Physics · Physics 2015-10-21 Mahdi Jamali , Angeline K. Smith , Hongshi Li , Jian-Ping Wang

Under conditions where the angular momentum of a ferromagnetic particle is dominated by intrinsic spin, applied torque is predicted to cause gyroscopic precession of the particle. If the particle is sufficiently isolated from the…

Micron scale ferromagnetic tubes placed on the ends of ferromagnetic CoTaZr spin waveguides are explored in order to enhance the excitation of Backward Volume Magnetostatic Spin Waves. The tubes produce a closed magnetic circuit about the…

Other Condensed Matter · Physics 2015-05-20 A. Kozhanov , D. Ouellette , M. Rodwell , D. W. Lee , S. X. Wang , S. J. Allen

We have measured the transport properties of Ferromagnet - Superconductor nanostructures, where two superconducting aluminum (Al) electrodes are connected through two ferromagnetic iron (Fe) ellipsoids in parallel. We find that, below the…

Ferrofluids are liquids exhibiting remarkably strong response to magnetic fields, which leads to fascinating properties useful in various applications. Understanding the wetting properties and spreading of ferrofluids is important for their…

Soft Condensed Matter · Physics 2018-10-15 Mika Latikka , Matilda Backholm , Jaakko V. I. Timonen , Robin H. A. Ras

Standing wave patterns that arise on the surface of ferrofluids by (single frequency) parametric forcing with an ac magnetic field are investigated experimentally. Depending on the frequency and amplitude of the forcing, the system exhibits…

Soft Condensed Matter · Physics 2009-10-31 Hyun-Jae Pi , So-yeon Park , Jysoo Lee , Kyoung J. Lee

We investigated the microwave-assisted DC voltages of ferromagnetic resonances and exchangedominated standing spin wave excitations in two different in-plane magnetized permalloy thin films via homodyne detection. The line shapes of…

Materials Science · Physics 2013-10-24 Ziqian Wang , Xiaofeng Zhu , Xiaoshuang Chen , Wei Lu

Coherent gigahertz-frequency surface acoustic waves (SAWs) traveling on the surface of a piezoelectric crystal can, via the magnetoelastic interaction, resonantly excite traveling spin waves in an adjacent thin-film ferromagnet. These…

Materials Science · Physics 2016-03-10 Praveen G. Gowtham , Takahiro Moriyama , Daniel C. Ralph , Robert A. Buhrman

The influence of a non-magnetic metallic substrate on the spin wave excitations in ultrathin ferromagnetic overlayers is investigated for different crystalline orientations. We show that spin wave dumping in these systems occur due to the…

Condensed Matter · Physics 2009-10-31 L. H. M. Barbosa , A. T. Costa , J. Mathon , R. B. Muniz

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

In this work we discuss the use of interferometric measurement technique to study microwave magnetization dynamics on ferromagnetic nanostructures. We demonstrate that in this way one can resolve features which are impossible to resolve…

Mesoscale and Nanoscale Physics · Physics 2014-02-17 Eugene N. Ivanov , Mikhail Kostylev

A robust approach to excitation and control of large amplitude standing magnetization waves in an easy axis ferromagnetic by starting from a ground state and passage through resonances with chirped frequency microwave or spin torque drives…

Mesoscale and Nanoscale Physics · Physics 2019-01-16 L. Friedland , A. G. Shagalov

We present theoretical studies of the influence of spin orbit coupling on the spin wave excitations of the Fe monolayer and bilayer on the W(110) surface. The Dzyaloshinskii-Moriya interaction is active in such films, by virtue of the…

Mesoscale and Nanoscale Physics · Physics 2010-10-19 A. T. Costa , R. B. Muniz , S. Lounis , A. B. Klautau , D. L. Mills

In a thin film of superconducting YBCO the impact of surface acoustic waves (SAWs) traveling on the piezoelectric substrate is investigated. A pronounced interaction between the ultrasonic waves and the vortex system in the type II…

Superconductivity · Physics 2009-11-11 F. Jachmann , C. Hucho

Electromagnetic response of a finite-width two-dimensional electron stripe is theoretically studied. It is shown that retardation and radiative effects substantially modify the absorption spectrum of the system at microwave frequencies,…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. A. Mikhailov , N. A. Savostianova

Motivated by the iron-based superconductors, we develop a self-consistent electronic theory for the itinerant spin excitations in the regime of coexistence of the antiferromagnetic stripe order with wavevector ${\bf Q}_{1} = (\pi,0)$ and…

Superconductivity · Physics 2011-12-22 J. Knolle , I. Eremin , J. Schmalian , R. Moessner

A magnetically levitated mass couples to gravity and can act as an effective gravitational wave detector. We show that a superconducting sphere levitated in a quadrupolar magnetic field, when excited by a gravitational wave, will produce…

High Energy Physics - Phenomenology · Physics 2025-06-10 Daniel Carney , Gerard Higgins , Giacomo Marocco , Michael Wentzel

We present an approach enabling generation of narrow spin wave beams in thin homogeneous ferromagnetic films. The main idea is to match the wave vector of the spin wave with that corresponding to the spectral maximum of the exciting…

Mesoscale and Nanoscale Physics · Physics 2016-07-26 P. Gruszecki , A. E. Serebryannikov , W. Śmigaj , M. Krawczyk