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We discover that the way spin-waves exert magnetic torques in multiferroic materials can cause not only domain wall motion, but also magnetization dynamics for homogeneous magnetization textures. Interestingly, the domain wall motion can be…

Mesoscale and Nanoscale Physics · Physics 2016-06-03 Iryna Kulagina , Jacob Linder

We theoretically study the dynamics of ferrimagnetic domain walls in the presence of Dzyaloshinskii-Moriya interaction. We find that an application of a DC magnetic field can induce terahertz spin-wave emission by driving ferrimagnetic…

Thermally induced magnetization dynamics is currently a flourishing field of research due to its potential application in information technology. We study the paradigmatic system of a magnetic domain wall in a thermal gradient which is…

Superconductivity · Physics 2022-02-08 I. V. Bobkova , A. M. Bobkov , Wolfgang Belzig

We have investigated numerically the field-driven propagation of perpendicularly magnetized ferromagnetic layers. It was then compared to the historical one-dimensional domain wall (DW) propagation model widely used in spintronics studies…

Materials Science · Physics 2018-03-01 L. Thevenard , C. Gourdon , S. Haghgoo , J-P. Adam , H. J. von Bardeleben , A. Lemaître , W. Schoch , A. Thiaville

A multiple-time scaling analysis of the dissipative, transversely driven Landau-Lifshitz equation in presence of exchange, shape demagnetisation and week anisotropy fields is performed for a dynamic domain state. Stationary solutions of the…

patt-sol · Physics 2008-02-03 Timm Plefka

We report the existence of a new regime for domain wall motion in uniaxial and near-uniaxial ferromagnetic nanowires, characterised by applied magnetic fields sufficiently strong that one of the domains becomes unstable. There appears a new…

Mesoscale and Nanoscale Physics · Physics 2020-02-05 Arseni Goussev , JM Robbins , Valeriy Slastikov , Sergiy Vasylkevych

We have investigated dynamic behaviors of the magnetic domain wall under perpendicular magnetic field pulses in ferromagnetic nanowires using micromagnetic simulations. It has been found that the perpendicular magnetic field pulse can…

Mesoscale and Nanoscale Physics · Physics 2020-03-26 Hong-Guang Piao , Dong-Hyun Kim , Je-Ho Shim , Li Qing Pan

Assuming a Fermi liquid behavior for $s$-conduction electrons, we rewrite the extended Landau-Lifshitz-Gilbert (LLG) equation renormalized by interactions through the Landau parameters $F^{a}_{l}$ ($l=0,1,2 \cdots$) in an explicit form to…

Strongly Correlated Electrons · Physics 2022-10-06 H. B. Brentan , P. F. Farinas

We study the current-driven domain wall (DW) motion in cylindrical nanowires using micromagnetic simulations by implementing the Landau-Lifshitz-Gilbert equation with nonlocal spin-transfer torque in a finite difference micromagnetic…

Mesoscale and Nanoscale Physics · Physics 2017-12-29 Weiwei Wang , Zhaoyang Zhang , Ryan A. Pepper , Congpu Mu , Yan Zhou , Hans Fangohr

We theoretically study the interaction of spin waves and a domain wall in a quasi-one-dimensional easy-cone ferromagnet. The gapless spin waves on top of a domain wall are found to exhibit finite reflection in contrast to the well-known…

Mesoscale and Nanoscale Physics · Physics 2024-07-10 Wooyon Kim , Se Kwon Kim

The geometry and morphology of magnetic domain walls (DWs) are closely related to their dynamics when driven by external forces. Under some reliable approximations DWs can be considered self-affine interfaces, so universal laws govern their…

Disordered Systems and Neural Networks · Physics 2023-12-29 P. Domenichini , G. Pasquini , M. G. Capeluto

Spins transverse to the magnetization of a ferromagnet only survives over a short distance. We develop a drift-diffusion approach that captures the main features of transverse spin effects in systems with arbitrary spin textures (vortices,…

Mesoscale and Nanoscale Physics · Physics 2013-07-29 Cyril Petitjean , David Luc , Xavier Waintal

We generalize domain-wall dynamics to the case of translationally noninvariant ferromagnetic nanowires. The obtained equations of motion make the description of the domain-wall propagation more realistic by accounting for the variations…

Mesoscale and Nanoscale Physics · Physics 2012-06-13 O. A. Tretiakov , Y. Liu , Ar. Abanov

It is known that oscillatory domain-wall (DW) motions in soft magnetic thin-film nanostripes above the Walker critical field lead to a remarkable reduction in the average DW velocities. In a much-higher-field region beyond the…

Materials Science · Physics 2010-02-03 Sang-Koog Kim , Jun-Young Lee , Youn-Seok Choi , Konstantin Yu. Guslienko , Ki-Suk Lee

Antiferromagnets (AFMs) have great benefits for spintronic applications such as high frequencies (up to THz), high speeds (up to tens of km/s) of magnetic excitations, and field-free operation. Advanced devices will require high-speed…

Mesoscale and Nanoscale Physics · Physics 2024-04-25 Roman V. Ovcharov , B. A. Ivanov , Johan Åkerman , Roman S. Khymyn

A domain wall in a ferromagnetic one-dimensional nanowire experiences current induced motion due to its coupling with the conduction electrons. When the current is not sufficient to drive the domain wall through the wire, or it is confined…

Mesoscale and Nanoscale Physics · Physics 2012-07-13 Nicholas Sedlmayr , Jamal Berakdar

Domain wall (DW) devices have garnered recent interest for diverse applications including memory, logic, and neuromorphic primitives; fast, accurate device models are therefore imperative for large-scale system design and verification.…

A domain wall in a ferromagnetic system will move under the action of an external magnetic field. Ultrathin Co layers sandwiched between Pt have been shown to be a suitable experimental realization of a weakly disordered 2D medium in which…

Materials Science · Physics 2011-08-11 P. Politi , P. J. Metaxas , J. -P. Jamet , R. L. Stamps , J. Ferré

We study the effect of a domain wall on the electronic transport in ferromagnetic quantum wires. Due to the transverse confinement, conduction channels arise. In the presence of a domain wall, spin up and spin down electrons in these…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Victor A. Gopar , Dietmar Weinmann , Rodolfo A. Jalabert , Robert L. Stamps

Charge resistance and spin torque are generated by coherent carrier transport through ferromagnetic 360 degree domain walls, although they follow qualitatively different trends than for 180 degree domain walls. The charge resistance of 360…

Mesoscale and Nanoscale Physics · Physics 2009-09-22 E. A. Golovatski , M. E. Flatté
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