Magnetic texture based magnonics

Abstract

The spontaneous magnetic orders arising in ferro-, ferri-and antiferromagnets stem from various magnetic interactions. Depending on the interplay and competition among the Heisenberg exchange interaction, Dzyaloshinskii-Moriya exchange interaction, magnetic dipolar interaction and crystal anisotropies, a great variety of magnetic textures may be stabilized, such as magnetic domain walls, vortices, Skyrmions and spiral helical structures.While each of these spin textures responds to external forces in a specific manner with characteristic resonance frequencies, they also interact with magnons, the fundamental collective excitation of the magnetic order, which can propagate in magnetic materials free of charge transport and therefore with low energy dissipation.Recent theories and experiments found that the interplay between spin waves and magnetic textures is particularly interesting and rich in physics. In this review, we introduce and discuss the theoretical framework of magnons living on a magnetic texture background, as well as recent experimental progress in the manipulation of magnons via magnetic textures. The flexibility and reconfigurability of magnetic textures are discussed regarding the potential for applications in information processing schemes based on magnons.

Geometric magnonics with chiral magnetic domain walls

“…As an alternative spin current carrier besides the spinpolarized electrons 1 , the spin wave manipulation is not only important for fundamental physics, but also attractive for industrial applications 2,3 . Due to recent developments in experimental techniques, including excitation in short wavelength 4 and large amplitude 5 , propagation in long distance 4,6 as well as detection with high sensibility 7,8 , magnonics as a discipline devoted to manipulate spin wave is receiving increasing interests 9,10 .…”

“…Since both magnetic texture and spin wave are of intrinsic magnetic nature, thus can coexist in single magnetic material, and intimately interact with each other. Using magnetic texture to store information, and spin wave to process information, pure magnetic computing schemes can be developed 5,10,16,17 .…”

Thermally induced spin torque and domain wall motion in superconductor/antiferromagnetic insulator bilayers

“…Recent advancements in stabilizing and manipulating textured magnetic states has led to a paradigmatic transition in the role of magnets in futuristic solid state devices 1,2 . In addition to being passive memory storage elements, spin textures may allow for an active participation of magnets in data processing 3 .…”

“…On the other hand, antiferromagnet (AFs) offer various advantages due to their fundamentally different and faster dynamics [12][13][14][15][16] , but lack net magnetization and the associated easy control. In the context of DW motion, AFs support significantly larger DW velocities thereby offering a faster operation of devices 2,17,18 .…”

Cross-sublattice Spin Pumping and Magnon Level Attraction in van der Waals Antiferromagnets

“…Capitalizing on these features, magnon-magnon coupling resulting in level repulsion and hybridization has recently been observed in the vdW AF CrCl 3 [21][22][23]. Approaching the challenge from a different direction, similar magnonic hybridization via their mutual coupling [24][25][26] has been discovered in carefully chosen platforms including compensated ferrimagnets [27] and synthetic AFs [28,29]. These investigations have, in part, been driven by the desire to control magnonic systems for quantum information applications [30] and were preceded by the realization of strong magnon-photon coupling [31,32].…”