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Domain walls in correlated charge density wave compounds such as 1T-TaS2 can have distinct localized states which govern physical properties and functionalities of emerging quantum phases. However, detailed atomic and electronic structures…

Materials Science · Physics 2023-04-11 Park Jae Whan , Lee Jinwon , Yeom Han Woong

Interactions between pairs of magnetic domain walls (DW) and pinning by radial constrictions were studied in cylindrical nanowires with surface roughness. It was found that a radial constriction creates a symmetric pinning potential well,…

Materials Science · Physics 2015-06-22 Voicu O. Dolocan

The domain wall response under constant external magnetic fields reveals a complex behavior where sample disorder plays a key role. Furthermore, the response to alternating magnetic fields has only been explored in limited cases and…

Manipulation of magnetic domain walls can be used to improve the capabilities of the next generation of memory and sensing devices. Materials of recent interest for such devices include heterostructures of ultrathin ferromagnets sandwiched…

Mesoscale and Nanoscale Physics · Physics 2018-08-03 S. Ali Nasseri , Eduardo Martinez , Gianfranco Durin

We found by micromagnetic simulations that the motion of a transverse wall (TW) type domain wall in magnetic thin-film nanostripes can be manipulated via interaction with spin waves (SWs) propagating through the TW. The velocity of the TW…

Magnetic domain walls can be moved by spin-polarized currents due to spin-transfer torques. This opens the possibility to use them in spintronic memory devices as, e.g., in racetrack storage. Naturally, in miniaturized devices domain walls…

Mesoscale and Nanoscale Physics · Physics 2019-09-04 Martin Stier , Jennifer Erdmann , Michael Thorwart

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

Domain wall propagation in modulated-diameter cylindrical nanowires is a key phenomenon to be studied with a view to designing three-dimensional magnetic memory devices. This paper presents a theoretical study of transverse domain wall…

Mesoscale and Nanoscale Physics · Physics 2018-07-18 J. A. Fernandez-Roldan , A. De Riz , B. Trapp , C. Thirion , J. -C. Toussaint , O. Fruchart , D. Gusakova

The control of domain walls or spin textures is crucial for spintronic applications of antiferromagnets. Despite many efforts, it has been challenging to directly visualize antiferromagnetic domains or domain walls with nanoscale…

Materials Science · Physics 2020-03-06 Paul M. Sass , Wenbo Ge , Jiaqiang Yan , D. Obeysekera , J. J Yang , Weida Wu

Interaction of domain walls (DWs) in ferromagnetic stripes is studied with relevance to the formation of stable complexes of many domains. Two DW system is described with the Landau-Lifshitz-Gilbert equation including regimes of narrow and…

Mesoscale and Nanoscale Physics · Physics 2013-10-29 Andrzej Janutka

We demonstrate that parametrically excited eigenmodes in nearby nanomagnets can be coupled to each other. Both positive (in-phase) and negative (anti-phase) couplings can be realized by a combination of appropriately chosen geometry and…

Mesoscale and Nanoscale Physics · Physics 2023-08-08 Domonkos Laszlo Farkas , Gyorgy Csaba

Difference in density of states for the spin's majority and minority bands in a ferromagnet changes the electrostatic potential along the domains, introducing the discontinuities of the potential at domain boundaries. The value of…

Materials Science · Physics 2009-11-07 M. Dzero , L. P. Gor'kov , A. K. Zvezdin , K. A. Zvezdin

Ferroelectric domain structures, separated by domain walls, often display unconventional physics and hold significant potential for applications in nano-devices. Most naturally growth domain walls are charge-neutral to avoid increased…

Materials Science · Physics 2024-12-17 Yunfei Hong , Junkai Deng , Yang Yang , Ri He , Zhicheng Zhong , Xiangdong Ding , Jun Sun , Jefferson Zhe Liu

We perform an extensive experimental spectroscopic study of the collective spin-wave dynamics occurring in a pair of magnetic nano-disks coupled by the magneto-dipolar interaction. For this, we take advantage of the stray field gradient…

We investigate the influence of the domain wall ferromagnetic resonance frequency on the spin transfer torque in a ferromagnetic nanowire. By employing micromagnetic simulations with the spin transfer torque, we find that the domain wall…

Materials Science · Physics 2010-09-21 Jungbum Yoon , Chun-Yeol You , Younghun Jo , Seung-Young Park , Myung-Hwa Jung

We have used the results of micromagnetic simulations to investigate the effects of nanowire geometry and domain wall magnetization structure on the characteristic parameters of magnetic atom traps formed by domain walls in planar…

The magnetoresistance (MR) associated with domain boundaries has been investigated in microfabricated bcc Fe (0.65 to 20 $\mu$m linewidth) wires with controlled stripe domains. Domain configurations have been characterized using magnetic…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. D. Kent , U. Ruediger , J. Yu , S. Zhang , P. M. Levy , Y. Zhong , S. S. P. Parkin

We study field-induced domain wall motion in permalloy nanowires with vertically etched nanotrench pinning site. Micromagnetic simulations and electrical measurements are employed to characterize the pinning potential at the nanotrench. It…

Materials Science · Physics 2014-04-07 Kulothungasagaran Narayanapillai , Hyunsoo Yang

Spin wave and magnetic domain wall are two of basic excitations in magnetic systems, and their spatiotemporal interplay encodes rich information of underlying magnetic interactions. In synthetic antiferromagnets, the domain wall acquires an…

Mesoscale and Nanoscale Physics · Physics 2025-09-03 Jin Lan , Yang Zhang

The interaction between transverse magnetic domain walls (TDWs) in planar (2D) and cylindrical (3D) nanowires is examined using micromagnetic simulations. We show that in perfect and surface deformed wires the free TDWs behave differently,…

Materials Science · Physics 2015-07-02 A. Pivano , V. O. Dolocan