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Related papers: Spin-orbit torques in Co/Pd multilayer nanowires

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We study theoretically the detection and possible utilization of electric current-induced mechanical torques in ferromagnetic-normal metal heterostructures that are generated by spin-flip scattering or the absorption of transverse spin…

Mesoscale and Nanoscale Physics · Physics 2010-01-01 Alexey A. Kovalev , Gerrit E. W. Bauer , Arne Brataas

We demonstrate efficient current induced spin orbit torque switching in perpendicularly magnetized epitaxial MgO(001)//Pd/Co2FeAl/MgO heterostructures grown by magnetron sputtering. The advantage of such heterostructures for spin orbit…

Mesoscale and Nanoscale Physics · Physics 2020-05-27 M. S. Gabor , T. Petrisor , M. Nasui , M. A. Nsibi , J. Nath , I. M. Miron

Spin transfer in asymmetric Co/Cu/Co bilayer magnetic nanopillars junctions has been studied at low temperature as a function of free-layer thickness. The phase diagram for current-induced magnetic excitations has been determined for…

Mesoscale and Nanoscale Physics · Physics 2007-09-14 W. Chen , A. D. Kent , M. J. Rooks , N. Ruiz , J. Z. Sun

We study, both experimentally and by numerical modeling, the magnetic dynamics that can be excited in a magnetic thin-film nanopillar device using the spin torque from a spatially localized current injected via a 10s-of-nm-diameter…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 G. Finocchio , O. Ozatay , L. Torres , R. A. Buhrman , D. C. Ralph , B. Azzerboni

We investigate the injection of quasiparticle spin currents into a superconductor via spin pumping from an adjacent FM layer.$\;$To this end, we use NbN/\ch{Ni80Fe20}(Py)-heterostructures with a Pt spin sink layer and excite ferromagnetic…

Spin transfer torques allow the electrical manipulation of the magnetization at room temperature, which is desirable in spintronic devices such as spin transfer torque memories. When combined with spin-orbit coupling, they give rise to…

We demonstrate that the spin Hall effect in a thin film with strong spin-orbit scattering can excite magnetic precession in an adjacent ferromagnetic film. The flow of alternating current through a Pt/NiFe bilayer generates an oscillating…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Luqiao Liu , Takahiro Moriyama , D. C. Ralph , R. A. Buhrman

Recent discoveries regarding current-induced spin-orbit torques produced by heavy-metal/ferromagnet and topological-insulator/ferromagnet bilayers provide the potential for dramatically-improved efficiency in the manipulation of magnetic…

Mesoscale and Nanoscale Physics · Physics 2016-11-08 D. MacNeill , G. M. Stiehl , M. H. D. Guimaraes , R. A. Buhrman , J. Park , D. C. Ralph

Spin Hall effects intermix spin and charge currents even in nonmagnetic materials and, therefore, ultimately may allow the use of spin transport without the need for ferromagnets. We show how spin Hall effects can be quantified by…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 O. Mosendz , J. E. Pearson , F. Y. Fradin , G. E. W. Bauer , S. D. Bader , A. Hoffmann

Electrical manipulation of spin textures inside antiferromagnets represents a new opportunity for developing spintronics with superior speed and high device density. Injecting spin currents into antiferromagnets and realizing efficient…

We examine the influence of crystal growth on the spin-pumping induced inverse spin Hall effect in Fe/Pt bilayers. The morphology of the Fe/Pt interface influences the effective spin mixing conductance. The increase of growth temperature…

The dynamics of current-induced motion of a magnetic domain wall in a quasi-one-dimensional ferromagnet with both easy-axis and easy-plane anisotropy, is studied. We pay a special attention to the case of a sharp domain wall, and calculate…

Materials Science · Physics 2009-11-11 V. K. Dugaev , V. R. Vieira , P. D. Sacramento , J. Barnas , M. A. N. Araujo , J. Berakdar

Electrically-induced electron spin polarization is imaged in n-type ZnSe epilayers using Kerr rotation spectroscopy. Despite no evidence for an electrically-induced internal magnetic field, current-induced in-plane spin polarization is…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 N. P. Stern , S. Ghosh , G. Xiang , M. Zhu , N. Samarth , D. D. Awschalom

We calculated the main dynamic parameters of the spin polarized current induced magnetic vortex oscillations in nanopillars, such as the range of current density, where a vortex steady oscillations exist, the oscillation frequency and orbit…

Other Condensed Matter · Physics 2009-12-31 Konstantin Y. Guslienko , Gloria R. Aranda , Julian M. Gonzalez

The charge and spin diffusion equations taking into account spin-flip and spin-transfer torque were numerically solved using a finite element method in complex non-collinear geometry with strongly inhomogeneous current flow. As an…

Mesoscale and Nanoscale Physics · Physics 2011-07-14 N. Strelkov , A. Vedyayev , N. Ryzhanova , D. Gusakova , L. D. Buda-Prejbeanu , M. Chshiev , S. Amara , N. de Mestier , C. Baraduc , B. Dieny

Spin-torque driven ferromagnetic resonance (ST-FMR) is used to study thin Co/Ni synthetic layers with perpendicular anisotropy confined in spin-valve based nanojunctions. Field swept ST-FMR measurements were conducted with a magnetic field…

Mesoscale and Nanoscale Physics · Physics 2008-01-07 W. Chen , J-M. L. Beaujour , G. de Loubens , A. D. Kent , J. Z. Sun

Spin pumping in ferromagnets provides a source of pure spin currents. Via the inverse spin Hall effect a spin current is converted into a charge current and a corresponding detectable DC-voltage. The ratio of injected spin current to…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 M. Obstbaum , M. Härtinger , T. Meier , F. Swientek , C. H. Back , G. Woltersdorf

Non-equilibrium spin transport in a magnetic tunnel junction comprising a single magnetic layer in the presence of interfacial spin-orbit interaction (SOI) is studied theoretically. The interfacial SOI generates a spin torque of the form…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 A. Manchon

While current-induced torque by orbital current has been experimentally found in various structures, evidence for its reciprocity has been missing so far. Here, we report experimental evidence of strong inverse orbital torque in YIG/Pt/CuOx…

Mesoscale and Nanoscale Physics · Physics 2022-10-03 E. Santos , J. E. Abrão , Dongwook Go , L. K. de Assis , Yuriy Mokrousov , J. B. S. Mendes , A. Azevedo

Nanodots with magnetic vortices have many potential applications, such as magnetic memories (VRAMs) and spin transfer nano-oscillators (STNOs). Adding a perpendicular anisotropy term to the magnetic energy of the nanodot it becomes possible…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 E. R. P. Novais , P. Landeros , A. G. S. Barbosa , M. D. Martins , F. Garcia , A. P. Guimarães
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