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The motion of a N\'eel-like ${180}^{\circ}$ domain wall induced by a time-dependent staggered spin-orbit field in the layered collinear antiferromagnet Mn$_2$Au is explored. Through an effective version of the two sublattice nonlinear…

Materials Science · Physics 2022-07-20 R. Rama-Eiroa , P. E. Roy , J. M. González , K. Y. Guslienko , J. Wunderlich , R. M. Otxoa

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

Domain walls in ferroelectrics exhibit a plethora of phases and functionalities not found in the bulk. The interplay of electrostatic, chemical, topological, and distortive inhomogeneities at the walls can be so complex, however, that this…

Mesoscale and Nanoscale Physics · Physics 2017-02-23 Gabriele De Luca , Marta D. Rossell , Jakob Schaab , Nathalie Viart , Manfred Fiebig , Morgan Trassin

Among the recent discoveries of domain wall functionalities, the observation of electrical conduction at ferroelectric domain walls in the multiferroic insulator BiFeO3 has opened exciting new possibilities. Here, we report evidence of…

Materials Science · Physics 2012-05-02 J. Guyonnet , I. Gaponenko , S. Gariglio , P. Paruch

We review our recent magnetotransport and micromagnetic studies of lithographically defined epitaxial thin film structures of bcc Fe and hcp Co with stripe domains. Micromagnetic structure and resistivity anisotropy are shown to be the…

Mesoscale and Nanoscale Physics · Physics 2016-08-15 Andrew D. Kent , Ulrich Rüdiger , Jun Yu , Luc Thomas , Stuart S. P. Parkin

The transport properties of domain walls in oxygen deficient multiferroic YMnO3 single crystals have been probed using conductive atomic force microscopy and piezoresponse force microscopy. Domain walls exhibit significantly enhanced…

Materials Science · Physics 2012-01-06 Y. Du , X. L. Wang , D. P. Chen , S. X. Dou , Z. X. Cheng , M. Higgins , G. Wallace , J. Y. Wang

Antiferromagnetic (AF) domain walls have recently attracted revived attention, not only in the emerging field of AF spintronics, but also more specifically for offering fast domain wall velocities and dynamic excitations up to the terahertz…

We propose a method to all-electrically control a domain-wall position in a ferromagnetic nanowire with Dzyaloshinskii-Moriya interaction. The strength of this interaction can be controlled by an external electric field, which in turn…

Mesoscale and Nanoscale Physics · Physics 2016-03-30 Koji Sato , Oleg A. Tretiakov

We present in-situ transmission electron microscopy observations of domain wall motion in thin freestanding potassium niobate single-crystals. We observe that not all domains of a given polarization orientation are equally switchable in…

Materials Science · Physics 2007-05-23 A. Krishnan , M. M. J. Treacy , M. E. Bisher , P. Chandra , P. B. Littlewood

Ferroic materials (ferromagnetic, ferroelectric, ferroelastic) usually divide into domains with different orientations of their order parameter. Coupling different ferroic systems creates new functionalities, for instance the electrical…

We microscopically derive transport equations for the conduction electrons in ferromagnetic materials with an inhomogeneous magnetization profile. Our quantum kinetic approach includes elastic scattering and anisotropic spin-flip scattering…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Christian Wickles , Wolfgang Belzig

We study the magnetic dynamics of magnetoelectric antiferromagnetic thin films, where an unconventional boundary ferromagnetism coexists with the bulk N\'{e}el phase below the N\'{e}el temperature. The spin exchange between the two order…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Ricardo Zarzuela , Se Kwon Kim , Yaroslav Tserkovnyak

This review describes in detail the essential techniques used in microscopic theories on spintronics. We have investigated the domain wall dynamics induced by electric current based on the $s$-$d$ exchange model. The domain wall is treated…

Mesoscale and Nanoscale Physics · Physics 2008-11-07 Gen Tatara , Hiroshi Kohno , Junya Shibata

We investigated head-to-head domain walls in nanostrips of epitaxial $\mathrm{Fe}_4\mathrm{N}(001)$ thin films, displaying a fourfold magnetic anisotropy. Magnetic force microscopy and micromagnetic simulations show that the domain walls…

Domain walls in antiferromagnets under a spin-polarized current present dynamical behavior that is not observed in ferromagnets, and it is tunable by the current polarization. Precessional dynamics is obtained for perpendicular spin…

Materials Science · Physics 2026-02-02 George Theodorou , Stavros Komineas

Domain pattern transfer from ferroelectric to ferromagnetic materials is a critical step for the electric field control of magnetism and has the potential to provide new schemes for low-power data storage and computing devices. Here we…

Materials Science · Physics 2023-07-06 Robbie G. Hunt , Kévin J. A. Franke , Philippa M. Shepley , Thomas A. Moore

Spinmotive force induced by domain wall motion in perpendicularly magnetized nanowires is numerically demonstrated. We show that using nanowires with large magnetic anisotropy can lead to a high stability of spinmotive force under strong…

Mesoscale and Nanoscale Physics · Physics 2018-12-31 Yuta Yamane , Jun'ichi Ieda , Sadamichi Maekawa

Ta/CoFeB/MgO trilayers with perpendicular magnetic anisotropy are expected to play a key role in the next generation of current and electric field switched memory and logic devices. In this study we use Kerr microscopy alongside electrical…

Materials Science · Physics 2016-01-20 Chris J. Durrant , Qiang Hao , Gang Xiao , Rob J. Hicken

Domain walls are functionally different from the domains they separate, but little is known about their mechanical properties. Using scanning probe microscopy, we have measured the mechanical response of ferroelectric 180o domain walls and…

We address the dynamics of magnetic domain walls in ferromagnetic nanowires under the influence of external time-dependent magnetic fields. We report a new exact spatiotemporal solution of the Landau-Lifshitz-Gilbert equation for the case…

Materials Science · Physics 2010-04-13 Arseni Goussev , JM Robbins , Valeriy Slastikov