Magnetic modulation of inverse Spin Hall Effect in lateral spin-valves

Abstract : We analytically investigated the spin-dependent transport properties in a lateral spin-valve device comprising pinned ferromagnetic electrodes allowing to inject a spin current in a spin conducting channel where spin orbit scattering takes place. This produces an Inverse Spin Hall voltage (ISHE) across the thickness of the spin conducting channel. It is shown that by adding an extra soft ferromagnetic electrode with rotatable magnetization along the spin conducting channel, the ISHE generated voltage can be magnetically modulated by changing the magnetization orientation of this additional electrode. The dependence of the ISHE voltage on the direction of magnetization of the ferromagnetic electrode with rotatable magnetization was calculated in various configurations. Our results suggest that such structures could be considered as magnetic field sensors in situations where the total thickness of the sensor is constrained such as in hard disk drive readers.
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Journal of Physics D: Applied Physics, IOP Publishing, 2018, 51 (20), 〈10.1088/1361-6463/aabb75〉
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T. Andrianov, A Vedyaev, Bernard Dieny. Magnetic modulation of inverse Spin Hall Effect in lateral spin-valves. Journal of Physics D: Applied Physics, IOP Publishing, 2018, 51 (20), 〈10.1088/1361-6463/aabb75〉. 〈hal-01835980〉

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