Anomalous spin-orbit field via Rashba-Edelstein effect at W/Pt interface

Abstract

We have studied spin-orbit (SO) field in Ni${}_{80}$Fe${}_{20}$(Py)/W/Pt trilayer by means of spin-torque ferromagnetic resonance, and demonstrated that the W/Pt interface generates an extra SO field acting on the Py layer. This unprecedented field originates from the following three processes, 1) spin accumulation at W/Pt interface via the Rashba-Edelstein effect, 2) diffusive spin transport in the W layer, and 3) spin absorption into the Py layer through accumulation at the Py/W interface. Our result means that we can create extra SO field away from the ferromagnet/ metal interface and control its strength by a combination of two different metals.

arXiv comment17 pages,5 figures

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Cited by in corpus (4)

• Spin-orbit torque generation in NiFe/IrO2 bilayers
• Direct observation of current-induced nonlinear spin torque in Pt-Py bilayers
• Lead-free Hybrid Perovskite: An Efficient Room Temperature Spin Generator via Large Interfacial Rashba effect
• Phase biasing of a Josephson junction using Rashba-Edelstein effect