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A systematic framework to investigate spin dynamics in non-collinear antiferromagnet is proposed. Taking Mn$_3$Sn as a representative example, we derive an effective low energy model based on the multipole expansion of the magnetic…

Mesoscale and Nanoscale Physics · Physics 2020-03-04 Takuya Nomoto , Ryotaro Arita

Magnetic domain walls function as a wave guide for low energy magnons. In this paper we develop the theory for the non-local transport of these bound magnons through a ferromagnetic insulator that are injected and detected electrically in…

Mesoscale and Nanoscale Physics · Physics 2021-08-25 Dion M. F. Hartmann , Andreas Rückriegel , Rembert A. Duine

Materials with antiferromagnetic order have recently emerged as promising candidates in spintronics based on their beneficial characteristics such as vanishing stray fields and ultra-fast dynamics. At the same time more complex localized…

Theoretical studies dealing with current-driven domain wall dynamics in ferrimagnetic alloys and, by extension, other antiferromagnetically coupled systems as some multilayers, are here presented. The analysis has been made by means of…

Applied Physics · Physics 2019-07-16 Eduardo Martínez , Víctor Raposo , Óscar Alejos

The dynamics of a 90$^{\circ }$ domain wall in an antiferromagnetic nanostrip driven by the current-induced spin-orbital torque are theoretically examined in the presence of random thermal fluctuations. A soliton-type equation of motion is…

Materials Science · Physics 2019-06-26 Yuriy G. Semenov , Xinyi Xu , Ki Wook Kim

Theoretically, we study the dynamics of a current induced domain wall in the bi-layer structure consists of a ferromagnetic layer and a non-magnetic metal layer with strong spin-orbit coupling in the presence of spin-Hall effect. The…

Materials Science · Physics 2015-05-21 R. Arun , P. Sabareesan , M. Daniel

We study the dynamics of a magnetic domain wall, inserted in, or juxtaposed to, a conventional superconductor, via the passage of a spin polarized current through a FSF junction. Solving the Landau-Lifshitz-Gilbert equation of motion for…

Superconductivity · Physics 2015-06-03 P. D. Sacramento , L. C. Fernandes Silva , G. S. Nunes , M. A. N. Araujo , V. R. Vieira

Magnetic bimerons are topologically nontrivial spin textures in in-plane easy-axis magnets, which can be used as particle-like information carriers. Here, we report a theoretical study on the nonreciprocal dynamics of asymmetrical…

Mesoscale and Nanoscale Physics · Physics 2022-01-21 Laichuan Shen , Jing Xia , Zehan Chen , Xiaoguang Li , Xichao Zhang , Oleg A. Tretiakov , Qiming Shao , Guoping Zhao , Xiaoxi Liu , Motohiko Ezawa , Yan Zhou

The dynamics of the domain wall (DW) in a biaxial ferromagnet interacting with a spin-polarized current are described by sine-gordon (SG) equation coupled with Gilbert damping term in this paper. Within our frame-work of this model, we…

Mesoscale and Nanoscale Physics · Physics 2012-08-09 Xin Liu , Xiong-Jun Liu , Mo-Lin Ge

We investigate magnetic domain wall (MDW) dynamics induced by applied electric fields in ferromagnetic-ferroelectric thin-film heterostructures. In contrast to conventional driving mechanisms where MDW motion is induced directly by magnetic…

Materials Science · Physics 2014-01-17 Ben Van de Wiele , Lasse Laurson , Kévin Franke , Sebastiaan van Dijken

We theoretically investigate the interaction between magnons and a Skyrmion-textured domain wall in a two-dimensional antiferromagnet and elucidate the resultant properties of magnon transport. Using supersymmetric quantum mechanics, we…

Mesoscale and Nanoscale Physics · Physics 2024-07-10 Seungho Lee , Kouki Nakata , Oleg Tchernyshyov , Se Kwon Kim

We study spin textures in a quantum Hall Ising ferromagnet. Domain walls between ferro and unpolarized states at $\nu=2$ are analyzed with a functional theory supported by a microscopic calculation. In a neutral wall, Hartree repulsion…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 L. Brey , C. Tejedor

We study current-induced dynamics of a magnetic domain wall by solving a time-dependent Schr\"{o}dinger equation combined with Landau-Lifshitz-Gilbert equation in a one-dimensional electron system coupled to localized spins. Two types of…

Mesoscale and Nanoscale Physics · Physics 2009-03-10 Daisuke Matsubayashi , Masafumi Udagawa , Masao Ogata

The understanding of antiferromagnetic domain walls, which are the interface between domains with different N\'eel order orientations, is a crucial aspect to enable the use of antiferromagnetic materials as active elements in future…

When a spin-polarized current flows through a ferromagnetic (FM) metal, angular momentum is transferred to the background magnetization via spin-transfer torques. In antiferromagnetic (AFM) materials, however, the corresponding problem is…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Ran Cheng , Qian Niu

Current-driven magnetic domain wall motion is demonstrated in the quaternary ferromagnetic semiconductor (Ga,Mn)(As,P) at temperatures well below the ferromagnetic transition temperature, with critical currents of the order 10^5Acm^-2. This…

Unconventional magnetic materials including non-collinear antiferromagnets, p-wave magnets and altermagnets, are an emerging frontier for quantum spintronics and hybrid quantum devices. Critical to the application of these materials is…

Materials Science · Physics 2025-10-09 Freya Johnson , Jan Zemen , Helena Knowles , Lesley F. Cohen

We predict a mechanism to controllably manipulate domain walls in kagome antiferromagnets via a single linearly polarized spin-wave source. We show by means of atomistic spin dynamics simulations of antiferromagnets with kagome structure…

Mesoscale and Nanoscale Physics · Physics 2021-10-14 Davi R. Rodrigues , Akshaykumar Salimath , Karin Everschor-Sitte , Kjetil M. D. Hals

We theoretically study the current-induced dynamics of a transverse magnetic domain wall in bi-layer nanowires consisting of a ferromagnet on top of a nonmagnet having strong spin-orbit coupling. Domain wall dynamics is characterized by two…

Mesoscale and Nanoscale Physics · Physics 2012-07-18 Soo-Man Seo , Kyoung-Whan Kim , Jisu Ryu , Hyun-Woo Lee , Kyung-Jin Lee

Dynamic magnetic textures may transfer the angular moment from the varying in time antiferromagnetic order to spins of conduction electrons. Due to the spin orbit coupling (SOC) these spin excitations can induce the electric current of…

Mesoscale and Nanoscale Physics · Physics 2023-11-15 A. G. Mal'shukov