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Magnetoresistance measurements in the CPP geometry have been performed on single electrodeposited Co nanowires exchange biased on one side by a sputtered amorphous GdCo layer. This geometry allows the stabilization of a single domain wall…

Materials Science · Physics 2009-10-31 J. -E. Wegrowe , A. Comment , Y. Jaccard , J. -Ph. Ansermet , N. M. Dempsey , J-P. Nozieres

Domain wall dynamics in ferromagnets is complicated by internal degrees of freedom of the domain walls. We develop a model of domain walls in disordered thin films with perpendicular magnetic anisotropy capturing such features, and use it…

Statistical Mechanics · Physics 2022-03-08 Audun Skaugen , Lasse Laurson

Intrinsic domain-wall resistance (DWR) in (Ga,Mn)As is studied theoretically and compared to experimental results. The recently developed model of spin transport in diluted ferromagnetic semiconductors [Van Dorpe et al., Phys. Rev. B 72,…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. Oszwałdowski , J. A. Majewski , T. Dietl

We study the magnetic domain wall structure in magnetic bilayers (two ultrathin ferromagnetic layers separated by a non magnetic spacer) with perpendicular magnetization. Combining magnetic force and ballistic electron emission…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Amandine Bellec , Stanislas Rohart , Michel Labrune , Jacques Miltat , André Thiaville

We theoretically and numerically investigate magnetic domain wall dynamics in a nanowire of easy-cone magnet. The easy-cone domain wall exhibits several distinguishing dynamic features in comparison to the easy-axis domain wall. The…

Applied Physics · Physics 2019-01-30 Peong-Hwa Jang , Se-Hyeok Oh , Kyung-Jin Lee

We show that very large negative magnetoresistance can be obtained in magnetic trilayers in a current-in-plane geometry owing to the existence of crossed Andreev reflection. This spin-valve consists of a thin superconducting film sandwiched…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 F. Giazotto , F. Taddei , R. Fazio , F. Beltram

Electronic transport through thin and laterally constrained domain walls in ferromagnetic nanojunctions is analyzed theoretically. The description is formulated in the basis of scattering states. The resistance of the domain wall is…

Materials Science · Physics 2009-11-10 V. K. Dugaev , J. Berakdar , J. Barnas

We experimentally investigate the current-induced magnetization reversal in Pt/[Co/Ni]$_3$/Al multilayers combining the anomalous Hall effect and magneto-optical Kerr effect techniques in crossbar geometry. The magnetization reversal occurs…

We report on reversible electric-field-driven magnetic domain wall motion in a Cu/Ni multilayer on a ferroelectric BaTiO$_3$ substrate. In our heterostructure, strain-coupling to ferroelastic domains with in-plane and perpendicular…

We have performed spatially resolved Polar Magneto-Optical Kerr Effect Microscopy measurements on as-grown and annealed Ga0.95Mn0.05As thin films with tensile strain. We find that the films exhibit very strong perpendicular magnetic…

We investigate the inversion process of magnetic domain walls (DWs) propagating through synthetic noncollinear magnetic textures, whereby an up/down DW can be transformed into a down/up DW and vice versa. We exploit the lateral coupling…

We theoretically investigate the transfer of angular momentum between a spin superfluid and a domain wall in an exchange coupled easy-axis and easy-plane magnetic insulator system. A domain wall in the easy-axis magnet absorbs spin angular…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Pramey Upadhyaya , Se Kwon Kim , Yaroslav Tserkovnyak

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

An antiferromagnetic domain wall in a thermal gradient is found to experience a force towards colder regions upon the application of a uniform magnetic field along the easy axis. This force increases with the strength of the applied field…

Mesoscale and Nanoscale Physics · Physics 2020-10-21 R. Yanes , M. Rodriguez Rosa , L. Lopez-Diaz

We investigate the anisotropy of magnetic reversal and current-driven domain wall motion in annealed Ga_0.95Mn_0.05As thin films and Hall bar devices with perpendicular magnetic anisotropy. Hall bars with current direction along the [110]…

Mesoscale and Nanoscale Physics · Physics 2008-05-27 K Y Wang , A C Irvine , J Wunderlich , K W Edmonds , A W Rushforth , R P Campion , C T Foxon , D A Williams , B L Gallagher

We have performed a layer-resolved, microscopic study of interactions between domain walls in two magnetic layers separated by a non-magnetic one, using high-resolution x-ray photoemission electron microscopy. Domain walls in the hard…

Perpendicularly magnetized materials have attracted tremendous interest due to their high anisotropy, which results in extremely narrow, nano-sized domain walls. As a result, the recently studied current-induced domain wall motion (CIDWM)…

Materials Science · Physics 2015-06-11 P. P. J. Haazen , E. Murè , J. H. Franken , R. Lavrijsen , H. J. M. Swagten , B. Koopmans

We propose a magnetization reversal model to explain the perpendicular switching of a single ferromagnetic layer induced by an in-plane current. Contrary to previously proposed reversal mechanisms that such magnetic switching is directly…

Mesoscale and Nanoscale Physics · Physics 2017-01-11 Chong Bi , Ming Liu

In this work we show the existence of closure domains in Fe$_{1-x}$Ga$_x$ thin films featuring a striped magnetic pattern and study the effect of the magnetic domain arrangement on the magnetotransport properties. By means of X-ray resonant…

The domain wall dynamics driven by an out of plane magnetic field was measured for a series of magnetic trilayers with different strengths of the interfacial Dzyaloshinskii-Moriya interaction (DMI). The features of the field-driven domain…

Mesoscale and Nanoscale Physics · Physics 2021-07-20 J. Pena Gracia , A. Fassatoui , J. Vogel , A. Thiaville , S. Pizzini