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Spin waves (SWs), being usually reflected by domain walls, could also be channeled along them. Edge domain walls yield the interesting, and potentially applicable to real devices property of broadband spin waves confinement to the edges of…

Other Condensed Matter · Physics 2022-04-19 Diego Caso , Farkhad G. Aliev

The damping of spin waves parametrically excited in the magnetic insulator Yttrium Iron Garnet (YIG) is controlled by a dc current passed through an adjacent normal-metal film. The experiment is performed on a macroscopically sized…

Using spin waves we directly probe the interface of an exchange biased Ni$_{80}$Fe$_{20}$/Ir$_{25}$Mn$_{75}$ film which has been modified by the presence of an Au dusting layer. Combining this experimental data with a discretised simulation…

Mesoscale and Nanoscale Physics · Physics 2011-12-12 R. Magaraggia , S. McIntyre , K. Kennewell , R. L. Stamps , M. Ali , D. Greig , B. J. Hickey , C. H. Marrows

Polarized neutron inelastic scattering has been used to measure spin excitations in ferromagnetic La$_{0.82}$Sr$_{0.18}$CoO$_{3}$. The magnon spectrum of these spin excitations is well defined at low energies but becomes heavily damped at…

Strongly Correlated Electrons · Physics 2010-10-08 R. A. Ewings , P. G. Freeman , M. Enderle , J. Kulda , D. Prabhakaran , A. T. Boothroyd

We have calculated Heisenberg exchange parameters for bcc-Fe, fcc-Co, and fcc-Ni using the scalar-relativistic spin-polarized Green function technique within the tight-binding linear muffin-tin orbital method and by employing the magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Marek Pajda , Josef Kudrnovsky , Ilja Turek , Vaclav Drchal , Patrick Bruno

The increasing demand for higher data volume and faster transmission in modern wireless telecommunication systems has elevated requirements for 5G high-band RF hardware. Spin-Wave technology offers a promising solution, but its adoption is…

Computational Physics · Physics 2025-06-11 Florian Bruckner , Kristýna Davídková , Claas Abert , Andrii Chumak , Dieter Suess

The phase diagrams of EuFe$_{2-x}$Co$_x$As$_2$ $(0 \leq x \leq 0.4)$ and EuFe$_2$As$_{2-y}$P$_y$ $(0 \leq y \leq 0.43)$ are investigated by Eu$^{2+}$ electron spin resonance (ESR) in single crystals. From the temperature dependence of the…

Two dimensional (2D) materials provide a unique platform to explore the full potential of magnetic proximity driven phenomena, which can be further used for applications in next generation spintronic devices. Of particular interest is to…

The critical temperature of high-$T_c$ superconductors is determined, at least in part, by the electron-phonon coupling. We include the effect of an exchange interaction between the electrons and calculate the renormalization of the bare…

Condensed Matter · Physics 2009-10-22 D. Manske , C. T. Rieck , D. Fay

we investigate the thermodynamic properties of weakly anisotropic disordered magnetic chains where the nearest-neighbor Heisenberg exchange coupling is the dominant spin-spin interaction. In addition to the exchange interaction, there is…

Disordered Systems and Neural Networks · Physics 2009-11-07 I. Avgin , D. L. Huber

Spatial confinement of electronic topological surface states (TSS) in topological insulators poses a formidable challenge because TSS are protected by time-reversal symmetry. In previous works formation of a gap in the electronic spectrum…

We have used high-resolution neutron spectroscopy experiments to determine the complete spin wave spectrum of the heavy fermion antiferromagnet CeRhIn$_5$. The spin wave dispersion can be quantitatively reproduced with a simple $J_1$-$J_2$…

Strongly Correlated Electrons · Physics 2014-12-19 Pinaki Das , S. -Z. Lin , N. J. Ghimire , K. Huang , F. Ronning , E. D. Bauer , J. D. Thompson , C. D. Batista , G. Ehlers , M. Janoschek

We use micro-focus Brillouin light scattering spectroscopy to study the effects of spin-orbit torque on thermal spin waves in almost angular-momentum compensated ferrimagnetic CoGd alloy films. The spin-orbit torque is produced by the…

Mesoscale and Nanoscale Physics · Physics 2020-10-15 B. Divinskiy , G. Chen , S. Urazhdin , S. O. Demokritov , V. E. Demidov

Applying the local density and dynamical mean field approximations to paramagnetic \gamma-iron we revisit the problem of theoretical description of magnetic properties in a wide temperature range. We show that contrary to \alpha-iron, the…

Strongly Correlated Electrons · Physics 2013-10-29 P. A. Igoshev , A. V. Efremov , A. I. Poteryaev , A. A. Katanin , V. I. Anisimov

We calculate the correction to the conductivity of a disordered ferromagnetic metal due to spin-wave-mediated electron--electron interactions. This correction is the generalization of the Altshuler-Aronov correction to spin-wave-mediated…

Mesoscale and Nanoscale Physics · Physics 2014-07-16 Jeroen Danon , Alessandro Ricottone , Piet W. Brouwer

Ferromagnetic semiconductors discovered in two-dimensional (2D) materials open an avenue for highly integrated and multifunctional spintronics. The Curie temperature (TC) of existed 2D ferromagnetic semiconductors is extremely low and the…

Materials Science · Physics 2021-11-02 Wenxuan Zhu , Cheng Song , Lei Han , Hua Bai , Qian Wang , Siqi Yin , Lin Huang , Tongjin Chen , Feng Pan

Brillouin light scattering measurements were performed in the backscattering geometry on a Bi-substituted rare earth iron garnet. We observed two different peaks, one attributed to a surface spin wave in the dipole-exchange regime. The…

We have investigated the quasi-one dimensional Ni-chain compound PbMn$_2$Ni$_6$Te$_2$O$_{18}$ using theoretical DFT calculations, inelastic neutron scattering and optical spectroscopy in order to understand the nature of magnetic exchange…

We investigated the magnetic properties of Sendust (Fe-Al-Si) alloys not only at 0 K but also at finite-temperatures by means of the first-principles calculations assuming A2, B2, and DO3 structures. We confirmed that the itinerant…

Materials Science · Physics 2024-07-04 Shogo Yamashita , Akimasa Sakuma

Two channels of the sd exchange interaction are considered in magnetic junctions. The first channel describes the interaction of transversal spins with the lattice magnetization. The second one describes the interaction of longitudinal…

Materials Science · Physics 2010-10-22 S. G. Chigarev , E. M. Epshtein , Yu. V. Gulyaev , P. E. Zilberman
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