Independence of spin-orbit torques from the exchange bias direction in Ni$_{81}$Fe$_{19}$/IrMn bilayers

Axel Hoffmann; Hilal Saglam; J. Carlos Rojas-Sanchez; John E. Pearson; Michel Hehn; Sebastien Petit; Stephane Mangin; Wei Zhang

arxiv: 1804.01612 · v1 · pith:DEB54W5Wnew · submitted 2018-04-04 · ❄️ cond-mat.mtrl-sci · cond-mat.mes-hall

Independence of spin-orbit torques from the exchange bias direction in Ni₈₁Fe₁₉/IrMn bilayers

Hilal Saglam , J. Carlos Rojas-Sanchez , Sebastien Petit , Michel Hehn , Wei Zhang , John E. Pearson , Stephane Mangin , Axel Hoffmann This is my paper

classification ❄️ cond-mat.mtrl-sci cond-mat.mes-hall

keywords biasexchangeirmnspinanglesbilayerscorrelationdirection

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We investigated a possible correlation between spin Hall angles and exchange bias in Ni$_{81}$Fe$_{19}$/IrMn samples by performing spin torque ferromagnetic resonance measurements. This correlation is probed by patterning of Ni$_{81}$Fe$_{19}$/IrMn bilayers in different relative orientations with respect to the exchange bias direction. The measured voltage spectra allow a quantitative determination of spin Hall angles, which are independent of the orientation around 2.8\pm0.3%.

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Independence of spin-orbit torques from the exchange bias direction in Ni₈₁Fe₁₉/IrMn bilayers

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