Spin-memory loss at 4.2 K in sputtered Pd and Pt and at Pd/Cu and Pt/Cu interfaces

Kurt, Hüseyin; Loloee, R.; Eid, Khalid; Pratt, W. P.; Bass, J.

doi:10.1063/1.1528737

Cited by 120 publications

(128 citation statements)

References 10 publications

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“…[42]. Fast saturation of the damping at very thin Pt thicknesses has also been observed previously [22,37,38]. However, Liu et al [47] have recently pointed out that this very rapid attenuation is likely due to strong SML at the FM/Pt interface, and used a first principles calculation and data [61] from this measurement method to obtain 5.5 nm has been determined from a low temperature, 3-10 K, study of spin pumping in lateral spin valves [39,41] This work seems to resolve the controversy regarding the differences in the value of s λ for Pt as obtained from various spin Hall and other experiments, and demonstrates that the spin…”

supporting

confidence: 59%

Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity

Nguyen¹,

Ralph²,

Buhrman³

2016

Phys. Rev. Lett.

413

381

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supporting

confidence: 59%

Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity

Nguyen¹,

Ralph²,

Buhrman³

2016

Phys. Rev. Lett.

413

381

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“…The reported data for sf  in Pt and Pd span a significant range (0.5 to 14 nm for Pt [19,46,47], 2 to 12 nm for Pd [36,44,48,49,50], with several reported values smaller than the commonly-assumed mean-free-path for these materials.…”

Section:  mentioning

confidence: 99%

Spin-scattering rates in metallic thin films measured by ferromagnetic resonance damping enhanced by spin-pumping

Boone

Shaw

Nembach

et al. 2015

Journal of Applied Physics

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We determined the spin-transport properties of Pd and Pt thin films by measuring the increase in ferromagnetic resonance damping due to spin-pumping in ferromagnetic (FM)-nonferromagnetic metal (NM) multilayers with varying NM thicknesses. The increase in damping with NM thickness depends strongly on both the spin-and charge-transport properties of the NM, as modeled by diffusion equations that include both momentum-and spin-scattering parameters. We use the analytical solution to the spin-diffusion equations to obtain spin-diffusion lengths for Pt and Pd. By measuring the dependence of conductivity on NM thickness, we correlate the charge-and spin-transport parameters, and validate the applicability of various models for momentum-scattering and spin-scattering rates in these systems: constant, inverse-proportional (Dyakanov-Perel), and linearproportional (Elliot-Yafet). We confirm previous reports that the spin-scattering time appears to be shorter than the momentum scattering time in Pt, and the Dyakanov-Perel-like model is the best fit to the data.

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“…Although the ratio ␤ s3D / 3D Ϸ 0.37 is large in Pt, the observation of the nonlocal effect in this material is hindered by its extremely small spin diffusion length, ᐉ s Ϸ 10 nm. 21 We therefore conclude that GaAs systems seem to provide an optimal combination of parameter values for the observation of the nonlocal transport.…”

Section: Estimates Of the Nonlocal Effect For Various Materialsmentioning

confidence: 99%

Nonlocal charge transport mediated by spin diffusion in the spin Hall effect regime

et al. 2009

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A nonlocal electric response in the spin Hall regime, resulting from spin diffusion mediating charge conduction, is predicted. The spin-mediated transport stands out due to its long-range character, and can give dominant contribution to nonlocal resistance. The characteristic range of nonlocality, set by the spin diffusion length, can be large enough to allow detection of this effect in materials such as GaAs despite its small magnitude. The detection is facilitated by a characteristic nonmonotonic dependence of transresistance on the external magnetic field, exhibiting sign changes and decay.

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Spin-memory loss at 4.2 K in sputtered Pd and Pt and at Pd/Cu and Pt/Cu interfaces

Cited by 120 publications

References 10 publications

Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity

Spin Torque Study of the Spin Hall Conductivity and Spin Diffusion Length in Platinum Thin Films with Varying Resistivity

Spin-scattering rates in metallic thin films measured by ferromagnetic resonance damping enhanced by spin-pumping

Nonlocal charge transport mediated by spin diffusion in the spin Hall effect regime

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