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We numerically demonstrate that domain walls can be used as spin wave waveguides. We show that gapless spin waves bounded inside a domain wall can be guided by the domain wall. For Bloch walls, we further show that the bound spin waves can…

Mesoscale and Nanoscale Physics · Physics 2015-12-24 X. S. Wang , X. R. Wang

Traveling spin waves in magnonic waveguides undergo severe attenuation, which tends to result in a finite propagation length of spin waves, even in magnetic materials with the accessible lowest damping constant, heavily restricting the…

Mesoscale and Nanoscale Physics · Physics 2022-02-11 Xiangjun Xing , T. Wang , Yan Zhou

We found by micromagnetic simulations that the motion of a transverse wall (TW) type domain wall in magnetic thin-film nanostripes can be manipulated via interaction with spin waves (SWs) propagating through the TW. The velocity of the TW…

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

A domain wall (DW) in a nanowire can propagate under a longitudinal magnetic field by emitting spin waves (SWs). We numerically investigated the properties of SWs emitted by the DW motion, such as frequency and wavenumber, and their…

Mesoscale and Nanoscale Physics · Physics 2015-06-22 X. S. Wang , X. R. Wang

Spin waves offer intriguing novel perspectives for computing and signal processing, since their damping can be lower than the Ohmic losses in conventional CMOS circuits. For controlling the spatial extent and propagation of spin waves on…

Spin wave nonreciprocity in domain walls (DWs) allows for unidirectional signal processing in reconfigurable magnonic circuits. Using scanning transmission x-ray microscopy (STXM), we examined coherently-excited magnons propagating in…

A theory for the spin wave eigenmodes of a Dzyaloshinskii domain wall is presented. These walls are N\'eel-type domain walls that can appear in perpendicularly-magnetized ultrathin ferromagnets in the presence of a sizeable…

Materials Science · Physics 2015-07-07 Pablo Borys , Felipe Garcia-Sanchez , Joo-Von Kim , Robert L. Stamps

The interaction of propagating dipolar spin waves with magnetic domain walls is investigated in square-shaped microstructures patterned from the Heusler compound Co$_2$Mn$_{0.6}$Fe$_{0.4}$Si. Using magnetic force microscopy, the reversible…

Mesoscale and Nanoscale Physics · Physics 2015-06-09 P. Pirro , T. Koyama , T. Brächer , T. Sebastian , B. Leven , B. Hillebrands

Spin waves are perturbations in the relative orientation of magnetic moments in a continuous magnetic system, which have been proposed as a new kind of information carrier for spin-based low power applications. For this purpose, a major…

Mesoscale and Nanoscale Physics · Physics 2017-06-20 Michele Voto , Luis Lopez-Diaz , Eduardo Martinez

Transmission of microwave spin waves through a microstructured magnonic crystal in the form of a permalloy waveguide of a periodically varying width was studied experimentally and theoretically. The spin wave characteristics were measured…

Mesoscale and Nanoscale Physics · Physics 2011-07-06 A. V. Chumak , P. Pirro , A. A. Serga , M. P. Kostylev , R. L. Stamps , H. Schultheiss , K. Vogt , S. J. Hermsdoerfer , B. Laegel , P. A. Beck , B. Hillebrands

We investigated how the dynamics of a domain wall are affected by the presence of spin density waves in a ferromagnetic wire. Domain walls and other scattering centres can cause coherent spin density waves to propagate through a wire when a…

Mesoscale and Nanoscale Physics · Physics 2011-07-19 Nicholas Sedlmayr , Vitalii Dugaev , Jamal Berakdar

From the pioneering work of Winter [Phys. Rev. 124, 452 (1961)], a magnetic domain wall of Bloch type is known to host a special wall-bound spin-wave mode, which corresponds to spin-waves being channeled along the magnetic texture. Using…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 Yves Henry , Daniel Stoeffler , Joo-Von Kim , Matthieu Bailleul

The interaction between the propagating spin waves and the current driven motion of a transverse domain wall in magnetic nanowires is studied by micromagnetic simulations. If the speed of domain walls due to current induced spin transfer…

Materials Science · Physics 2011-03-25 Mahdi Jamali , Hyunsoo Yang , Kyung-Jin Lee

We present a concept of a tunable optical excitation of spin waves and filtering their spectra in a ferromagnetic film with 180$^{\circ}$ N\'eel domain wall. We show by means of micromagnetic simulation that the fluence of the femtosecond…

Strongly Correlated Electrons · Physics 2024-01-29 N. E. Khokhlov , A. E. Khramova , Ia. A. Filatov , P. I. Gerevenkov , B. A. Klinskaya , A. M. Kalashnikova

One recent breakthrough in the field of magnonics is the experimental realization of reconfigurable spin-wave nanochannels formed by magnetic domain wall with a width of $10-100$ nm [Wagner \emph{et al}., Nat. Nano. \textbf{11}, 432…

Mesoscale and Nanoscale Physics · Physics 2018-03-21 Beining Zhang , Zhenyu Wang , Yunshan Cao , Peng Yan , X. R. Wang

It is known that a Bloch domain wall in an anisotropic ferromagnet is transparent to spin waves. This result is derived by approximating the dipolar interaction between magnetic moments by an effective anisotropy interaction. In this paper…

Mesoscale and Nanoscale Physics · Physics 2022-07-13 Victor Laliena , Athanasios Athanasopoulos , Javier Campo

Adiabatic spin transfer torque induced domain wall (DW) depinning from a notch and DW propagation in a nanowire with a series of notches is investigated. Surprisingly, notches help a current to depin a DW and make a DW easier to propagate…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 H. Y. Yuan , X. R. Wang

The thermal spin-wave distribution in a Ni81Fe19 stripe with an asymmetric transverse domain wall has been investigated using Brillouin light scattering microscopy. Clear evidence has been found that the existence of the domain wall…

Materials Science · Physics 2009-11-13 C. W. Sandweg , S. J. Hermsdoerfer , H. Schultheiss , S. Schaefer , B. Leven , B. Hillebrands

Antisymmetric exchange interactions lead to non-reciprocal spin-wave propagation. As a result, spin waves confined in a nanostructure are not standing waves; they have a time-dependent phase, because counter-propagating waves of the same…

Mesoscale and Nanoscale Physics · Physics 2023-02-10 Jun-Wen Xu , Grant A. Riley , Justin M. Shaw , Hans T. Nembach , Andrew D. Kent
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