Spin pumping effect
WebJun 15, 2024 · Alloying Pt and Cu improved the spin Hall efficiency of Pt 75 Cu 25 /Co/Ta by 29% to a value of 0.31 ± 0.03 at 407 K. However, the critical switching current density is dependent on the ratio... WebJul 12, 2024 · The spin pumping process, spin Seebeck effect or spin Hall effect can be used to generate and inject a spin current into an AFMI, in which the driving forces are microwave,...
Spin pumping effect
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WebThe spin dynamic process of the IrMn/CoFe system has been investigated by the time-resolved magneto-optical Kerr effect. It is found that both spin pumping and the interfacial exchange spring effect between IrMn and CoFe layers contribute to the total effective Gilbert damping. With the increase in IrMn layer thickness (tIrMn), the saturated damping factor … WebAug 3, 2024 · We present a spin pumping and inverse spin Hall effect study in a series of CoFeB/IrMn heterostructures. The IrMn has been grown in AFM phase. Angle dependent …
WebMar 13, 2015 · We apply spin pumping and inverse spin Hall effect experiments, as a useful metrology, and study spin-orbit effects in a variety of metals and metal interfaces. We quantify the spin Hall effects in Ir and W using the conventional bilayer structures and discuss the self-induced voltage in a single layer of ferromagnetic permalloy. WebThe FMR linewidth and its anisotropy in F/f/F/AF multilayers, where spacer f has a low Curie point compared to the strongly ferromagnetic F and F, is investigated. The role of the interlayer exchange coupling in magnet…
WebThe spectral shape of the electromotive force is well reproduced using a simple Lorentz function, indicating that the electromotive force is due to the ISHE induced by the spin pumping; extrinsic magnetogalvanic effects are eliminated in this measurement. WebJun 25, 2024 · A linear-response formulation of the dc spin pumping, i.e., a spin injection from a precessing ferromagnet into an adjacent spin sink, is developed in view of describing many-body effects caused ...
WebJan 7, 2024 · Spin pumping (SP) is a well-established method to generate pure spin currents i.e., a pure spin current is emitted at the interface between a ferromagnet (FM) with a …
WebMar 14, 2024 · The conversion parameter λ IREE is quantified using spin pumping theory and its derived value is ≈ 18.85 x 10-12 m for maximum thickness (6 nm) of the Ag layer. The results presented here shows that spin pumping experiments prove to be an accessible approach to realize and quantify the IREE effect in room temperature deposited … kennedy school portland barWebSep 12, 2011 · Once put into motion and left to itself, a spinning top will slow down after a few rotations and eventually come to a halt. Friction losses deprive it of energy, until it … kennedy school of government facultySpin pumping is a method of generating a spin current, the spintronic analog of a battery in conventional electronics. In order to make a spintronic device, the primary requirement is to have a system that: can generate a current of spin-polarized electrons andis sensitive to the spin polarization. Most spintronic … See more Spin tunneling transport at the interface between a normal metal and a ferromagnetic insulator can be driven by microwave irradiation on the ferromagnetic side. See more The spin pumped into an adjacent layer by a precessing magnetic moment is given by where See more • Spintronic • Spin wave • Spin Engineering • Spin Hall effect See more kennedy school of musickennedy school redwood cityWebJan 8, 2016 · Spin pumping is a mechanism that generates spin currents from ferromagnetic resonance (FMR) over macroscopic interfacial areas, thereby enabling … kennedy school portland bathroomWebMay 23, 2011 · Spin pumping has been previously detected indirectly by increased damping due to the leakage of energy and angular momentum out of the ferromagnet into the conductor [9], spin back-flow induced voltages [10], and the inverse spin Hall effect (ISHE) [11], in which a spin current induces a transverse electromotive force in a normal metal … kennedys cmk chicagoWebApr 11, 2024 · The orbital pumping is the orbital counterpart of the spin pumping, which is one of the most versatile and powerful mechanisms for spin-current generation. We show that the orbital pumping in Ni/Ti bilayers injects an orbital current into the Ti layer, which is detected through the inverse orbital Hall effect. kennedy school portland movies