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The discovery that a spin polarized current can exert a large torque on a ferromagnet through a transfusion of spin angular momentum, offers a new way to control a magnetization by simple current injection, without the help of an applied…

We develop the theory of magnetic domain wall motion in coupled double-layer systems where electrons can hop between the layers giving rise to an antiferromagnetic coupling. We demonstrate that the force from the interlayer coupling drives…

介观与纳米尺度物理 · 物理学 2015-01-26 Henri Saarikoski , Hiroshi Kohno , Christopher H. Marrows , Gen Tatara

We calculate the interaction between two magnetic domain walls during their current-induced motion. This interaction produces a separation-dependent resistance and also a differential velocity, causing domains in motion to experience an…

介观与纳米尺度物理 · 物理学 2011-11-28 E. A. Golovatski , M. E. Flatté

The spin transfer torque generated by a spin-polarized current can induce the shift of the magnetic domain-wall position. In this work, we study theoretically the current-induced domain-wall motion by using the collective coordinate…

介观与纳米尺度物理 · 物理学 2007-05-23 Soon-Wook Jung , Hyun-Woo Lee

The current-driven domain wall motion along two exchange-coupled ferromagnetic layers with perpendicular anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single ferromagnetic layer. Our…

介观与纳米尺度物理 · 物理学 2018-01-24 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Riccardo Tomasello , Giovanni Finocchio , Eduardo Martinez

Control of magnetic domain wall movement by the spin-polarized current looks promising for creation of a new generation of magnetic memory devices. A necessary condition for this is the domain wall shift by a low-density current. Here I…

介观与纳米尺度物理 · 物理学 2014-03-11 Vladimir L. Korenev

Cylindrical magnetic nanowires have been proposed as a means of storing and processing information in a 3D medium, based on the motion of domain walls~(DWs). Introducing short chemical modulations in such wires would allow for reliable…

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…

介观与纳米尺度物理 · 物理学 2008-11-07 Gen Tatara , Hiroshi Kohno , Junya Shibata

The magnetization dynamics equation predicts that a domain wall that changes structure should undergo a displacement by itself - automotion - due to the relaxation of the linear momentum that is associated with the wall structure. We…

介观与纳米尺度物理 · 物理学 2015-05-19 Jean-Yves Chauleau , Raphaël Weil , André Thiaville , Jacques Miltat

Spin-orbit spin transfer torque allows an efficient control of magnetization by an in-plane current. Recent experiments found that the spin-orbit torque has strong dependence on the magnetization angle [Garello et al., Nature Nanotechnol.…

材料科学 · 物理学 2016-01-20 Seo-Won Lee , Kyung-Jin Lee

We calculate the electron-mediated exchange interaction between two domain walls in magnetic wires. This corresponds to the equilibrium regime and, therefore, the interaction can be additionally controlled by an electric current. The…

介观与纳米尺度物理 · 物理学 2011-11-17 N. Sedlmayr , V. K. Dugaev , M. Inglot , J. Berakdar

We show that spin transfer torque from direct spin-polarized current applied parallel to a magnetic domain wall (DW) induces DW motion in a direction independent of the current polarity. This unidirectional response of the DW to spin torque…

其他凝聚态物理 · 物理学 2015-05-14 Carl T. Boone , Ilya N. Krivorotov

We investigate the motion of magnetic domain walls driven by magnetic fields and current-driven spin-orbit torques in an exchange-biased system with perpendicular magnetization. We consider Cr2O3/Co/Pt trilayers as model system, in which…

材料科学 · 物理学 2022-10-20 B. J. Jacot , S. Vèlez , P. Noël , P. Helbingk , F. Binda , C. -H. Lambert , P. Gambardella

We demonstrate numerically the ability to displace a magnetic domain wall by a remote spin current injection. We consider a long and narrow magnetic nanostripe with a single domain wall (DW). The spin-polarized current is injected…

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…

介观与纳米尺度物理 · 物理学 2016-06-03 Iryna Kulagina , Jacob Linder

Theoretically, we study the dynamics of a current induced domain wall in the bi-layer structure consists of a ferromagnetic layer and a non-magnetic metal layer with strong spin-orbit coupling in the presence of spin-Hall effect. The…

材料科学 · 物理学 2015-05-21 R. Arun , P. Sabareesan , M. Daniel

The interaction between the propagating spin waves and the current driven motion of a transverse domain wall in magnetic nanowires is studied by micromagnetic simulations. If the speed of domain walls due to current induced spin transfer…

材料科学 · 物理学 2011-03-25 Mahdi Jamali , Hyunsoo Yang , Kyung-Jin Lee

Domain walls are the transition regions between two magnetic domains. These objects have been very relevant during the last decade, not only due to their intrinsic interest in the development of novel spintronics devices but also because of…

介观与纳米尺度物理 · 物理学 2021-05-19 Oscar Alejos , Víctor Raposo , Eduardo Martínez

Manipulation of magnetic domain walls via a helicity-independent laser pulse has recently been experimentally demonstrated and various physical mechanisms leading to domain wall dynamics have been discussed. Spin-dependent superdiffusive…

介观与纳米尺度物理 · 物理学 2020-05-20 Pavel Baláž , Karel Carva , Ulrike Ritzmann , Pablo Maldonado , Peter M. Oppeneer

We investigated how the dynamics of a domain wall are affected by the presence of spin density waves in a ferromagnetic wire. Domain walls and other scattering centres can cause coherent spin density waves to propagate through a wire when a…

介观与纳米尺度物理 · 物理学 2011-07-19 Nicholas Sedlmayr , Vitalii Dugaev , Jamal Berakdar
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