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Related papers: Complex domain wall dynamics in compressively stra…

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Coherent control of domain wall dynamics offers a route to fast manipulation of magnetic textures beyond thermally activated motion. We demonstrate resonant excitation of linear and nonlinear dynamics of a pinned domain wall in a…

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…

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

Magnetization reversal mechanisms and depth-dependent magnetic profile have been investigated in Co/Pd thin films magnetron-sputtered under continuously varying pressure with opposite deposition orders. For samples grown under increasing…

Materials Science · Physics 2014-04-15 Peter K. Greene , B. J. Kirby , J. W. Lau , J. A. Borchers , M. R. Fitzsimmons , Kai Liu

It has recently been shown that domain walls in ferromagnets can be moved in the presence of thermal gradients. In this work we study the motion of narrow domain walls in low-dimensional systems when subjected to thermal gradients. The…

Materials Science · Physics 2015-06-16 Jonathan Chico , Corina Etz , Lars Bergqvist , Olle Eriksson , Jonas Fransson , Anna Delin , Anders Bergman

Atomic force microscopy was used to investigate ferroelectric switching and nanoscale domain dynamics in epitaxial PbZr0.2Ti0.8O3 thin films. Measurements of the writing time dependence of domain size reveal a two-step process in which…

Disordered Systems and Neural Networks · Physics 2013-11-07 P. Paruch , T. Giamarchi , T. Tybell , J. -M. Triscone

We exploit the ability to precisely control the magnetic domain structure of perpendicularly magnetized Pt/Co/Pt trilayers to fabricate artificial domain wall arrays and study their transport properties. The scaling behaviour of this model…

Materials Science · Physics 2009-11-11 A. Aziz , S. J. Bending , H. G. Roberts , S. Crampin , P. J. Heard , C. H. Marrows

We demonstrate that the interplay of in-plane biaxial and uniaxial anisotropy fields in (Ga,Mn)As results in a magnetization reorientation transition and an anisotropic AC susceptibility which is fully consistent with a simple single domain…

Materials Science · Physics 2007-05-23 K-Y. Wang , M. Sawicki , K. W. Edmonds , R. P. Campion , S. Maat , C. T. Foxon , B. L. Gallagher , T. Dietl

Understanding the domain wall (DW) dynamics in magnetic nanowires (NW) is crucial for spintronic-based applications demanding the use of DWs as information carriers. This work focuses on the dynamics of a DW displacing along a bent NW with…

Mesoscale and Nanoscale Physics · Physics 2022-11-30 G. H. R. Bittencourt , S. Castillo-Sepúlveda , O. Chubykalo-Fesenko , R. Moreno , D. Altbir , V. L. Carvalho-Santos

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

Micromagnetic simulation is carried out to investigate the current-driven domain wall (DW) in a nanowire with perpendicular magnetic anisotropy (PMA). A stepped nanowire is proposed to pin DW and achieve high information storage capacity…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 S. Al Risi , R. Sbiaa , M. Al Bahri

Most of the existing researches on the dynamics of a domain wall (DW) have focused on the effect of DC biases, where the induced velocity is determined by the bias strength. Here we show that AC biases such as a field or a current are also…

Mesoscale and Nanoscale Physics · Physics 2019-08-06 Duck-Ho Kim , Dong-Hyun Kim , Dae-Yun Kim , Sug-Bong Choe , Teruo Ono , Kyung-Jin Lee , Se Kwon Kim

The interplay between intrinsic and surface/interface-induced magnetic anisotropies strongly in- fluences magnetization processes in nanomagnetic systems. We develop a micromagnetic theory to describe the field-driven reorientation in…

Mesoscale and Nanoscale Physics · Physics 2016-07-12 A. A. Leonov , U. K. Roessler , A. N. Bogdanov

We show that nano-scale variations of the order parameter in strongly-correlated systems can induce local spatial regions such as domain walls that exhibit electronic properties representative of a different, but nearby, part of the phase…

Strongly Correlated Electrons · Physics 2009-11-10 M. S. Rzchowski , Robert Joynt

We investigate theoretically the motion of chiral N\'eel domain walls in perpendicularly magnetized systems driven by in-plane strain gradients. We show that such strain drives domain walls efficiently towards increasing tensile…

Computational Physics · Physics 2022-12-01 Mouad Fattouhi , Felipe Garcia-Sanchez , Rocio Yanes , Victor Raposo , Eduardo Martinez , Luis Lopez-Diaz

There has been a plethora of studies on domain wall dynamics in magnetic nanostrips, mainly because of its versatile non-linear physics and potential applications in data storage devices. However, most of the studies focus on out-of-plane…

Mesoscale and Nanoscale Physics · Physics 2022-07-27 Zhoujian Sun , Panpan Fang , Xinwei Shi , X. S. Wang , Fuxiang Li

We study theoretically hole current-driven domain wall dynamics in (Ga,Mn)As. We show that the spin-orbit coupling causes significant hole reflection at the domain wall, even in the adiabatic limit when the wall is much thicker than the…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Anh Kiet Nguyen , Hans Joakim Skadsem , Arne Brataas

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

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

We have performed a systematic investigation of magnetotransport of a series of as-grown and annealed Ga1-xMnxAs samples with 0.011 <= x <= 0.09. We find that the anisotropic magnetoresistance (AMR) generally decreases with increasing…

Materials Science · Physics 2009-11-11 K. Y. Wang , K. W. Edmonds , R. P. Campion , L. X. Zhao , C. T. Foxon , B. L. Gallagher