Enhanced Inverse Spin-Hall Effect in Ultrathin Ferromagnetic/Normal Metal Bilayers
arXiv:1210.5230 · doi:10.1063/1.4792693
Abstract
We measure electrically detected ferromagnetic resonance in microdevices patterned from ultra-thin Co/Pt bilayers. Spin pumping and rectification voltages are observed and distinguished via their angular dependence. The spin-pumping voltage shows an unexpected increase as the cobalt thickness is reduced below 2 nm. This enhancement allows more efficient conversion of spin to charge current and motivates a theory modelling the dependence of impurity scattering on surface roughness.
References in corpus (14)
- Spin torque switching with the giant spin Hall effect of tantalum
- Enhanced Gilbert Damping in Thin Ferromagnetic Films
- Spin Torque Ferromagnetic Resonance Induced by the Spin Hall Effect
- Direct electronic measurement of the spin Hall effect
- Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
- Spin pumping and magnetization dynamics in metallic multilayers
- Quantifying spin Hall angles from spin pumping: Experiments and Theory
- Giant Spin Hall Effect Induced by Skew Scattering from Bismuth Impurities inside Thin Film CuBi Alloys
- Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
- Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers
- Microwave photovoltage and photoresistance effects in ferromagnetic microstrips
- Spin Hall Angle Quantification from Spin Pumping and Microwave Photoresistance
- Surface-assisted Spin Hall Effect in Au Films with Pt Impurities
- Broadband ferromagnetic resonance of Ni81Fe19 wires using a rectifying effect
Cited by in corpus (4)
- Spin-orbit torque opposing the Oersted torque in ultrathin Co/Pt bilayers
- Excitation and detection of short-waved spin waves in ultrathin Ta/CoFeB/MgO-layer system suitable for spin-orbit-torque magnonics
- Insights into spin and charge currents crossing ferromagnetic/nonmagnetic interfaces induced by spin and anomalous Hall effect
- Electrical detection of microwave assisted magnetization reversal by spin pumping