Results 251 to 260 of about 41,920 (290)

Topological skyrmion dynamics driven by spin-transfer torque

2015 IEEE Magnetics Conference (INTERMAG), 2015
Very recently, an important class of magnetic solitons called magnetic skyrmions has been widely studied [1,2]. The stability of these topological defects has been analyzed in the presence of intrinsic dissipation both as a function of Dzyaloshinskii-Moriya interaction (DMI) and as a function of a spin-polarized current (SPC).
CARPENTIERI, Mario, Tomasello, R., Finocchio, G., ZIVIERI, Roberto   +3 more
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Spin-transfer torque switching in magnetic tunnel junctions and spin-transfer torque random access memory

Journal of Physics: Condensed Matter, 2007
We present experimental and numerical results of current-driven magnetization switching in magnetic tunnel junctions. The experiments show that, for MgO-based magnetic tunnelling junctions, the tunnelling magnetoresistance ratio is as large as 155% and the intrinsic switching current density is as low as 1.1 ? 106?A?cm?2. The thermal effect and current
Zhitao Diao, Zhanjie Li, Shengyuang Wang, Yunfei Ding, Alex Panchula, Eugene Chen, Lien-Chang Wang, Yiming Huai   +7 more
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Spin-transfer-torque-induced phenomena

Journal of Physics D: Applied Physics, 2011
This cluster, consisting of five invited articles on spin-transfer torque, offers the very first review covering both magnetization reversal and domain-wall displacement induced by a spin-polarized current. Since the first theoretical proposal on spin-transfer torque—reported by Berger and Slonczewski independently—spin-transfer torque has been ...
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Manipulating spin transfer torque with light

Superlattices and Microstructures, 2017
We study the spin transfer torque (STT) induced onto a nanomagnet as a spin-polarized current flows through a junction made of the magnet sandwiched between two semiconductors. This junction is one-dimensional and highly idealized, the thin magnetic layer being mimicked by a spin-dependent contact force.
Vendelbjerg KL, Rontani M
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Spin-Transfer Torque and Dynamics

2006
The currents in magnetic multilayers are spin polarized and can carry enough angular momentum that they can cause magnetic reversal and induce stable precession of the magnetization in thin magnetic layers. The flow of spins is determined by the spin-dependent transport properties, like conductivity, interface resistance, and spin-flip scattering in ...
Mark D. Stiles, Jacques Miltat
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Low-current spin transfer torque MRAM

2015 IEEE Magnetics Conference (INTERMAG), 2015
Spin Transfer Torque Magnetic Random Access Memory (MRAM) possesses a unique combination of high speed, high endurance, non-volatility, and small cell size. Among the emerging new memory technologies, including phase change memory, resistive random access memory, and conductive bridging random access memory, Spin Transfer Torque MRAM is the only ...
D. Worledge, A. J. Annunziata, S. Brown, W. Chen, J. Harms, G. Hu, Y. Kim, C. Kothandaraman, G. Lauer, J. Lee, L. Liu, S. Murthy, J. Nowak, E. O'Sullivan, J. Park, R. Robertazzi, J. Z. Sun, P. Trouilloud   +17 more
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Spin transfer torque in magnetic nanostructures

2013 IEEE International Conference of Electron Devices and Solid-state Circuits, 2013
In this paper we study the spin torque driven magnetization dynamics of metalic spin valve structures based on a free composite synthetic ferromagnet (SyF) that consists of two ferromagnetic layers coupled through a normal metal spacer. The magnetization can be excited into dynamical precessional states by an applied electric current at zero external ...
null Yan Zhou, Jiang Xiao, Gerrit E. W. Bauer, null Fu-chun Zhang   +3 more
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Device implications of spin-transfer torques

Journal of Magnetism and Magnetic Materials, 2008
This article examines spin-transfer torques from the perspective of three technological applications: hard disk drives, magnetic random access memory (MRAM), and current-tunable high-frequency oscillators. In hard disk drives, spin-transfer torques are a source of noise, and we discuss the implications spin-transfer noise will have on future sensor ...
J.A. Katine, Eric E. Fullerton
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Calculation of Nonlocal Spin Transfer Torque

IEEE Transactions on Magnetics, 2012
We microscopically derive the spin-transfer torque due to diffusive spin current arising from nonequilibrium spin accumulation as realized in systems with nonlocal spin valve structure. Spin relaxation effects in spin transport is taken into account by introducing magnetic impurities.
Kazuhiro Hosono, Junya Shibata, Hiroshi Kohno, Yukio Nozaki   +3 more
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Macroscopic description of spin transfer torque

Materials Science and Engineering: B, 2006
A macroscopic description of the current-induced torque due to spin transfer has been developed for layered systems consisting of ferromagnetic films, separated by nonmagnetic layers. The description is based on the classical spin diffusion equations for the distribution functions used in the theory of current-perpendicular-to-plane giant ...
J. Barnas, A. Fert, M. Gmitra, I. Weymann, V.K. Dugaev   +4 more
openaire   +1 more source