Adding a NiW seed layer to a Ru/Pt/Co stack improves Ru hcp(002) texture and raises the measured damping-like torque efficiency, an effect the authors attribute to enhanced orbital Hall torque.
We used Hall cross devices of the reference sample and a series N sample with t Pt = 2.5 nm (which has maximum 饾湁饾惙饾惪 饾惛 ) for the measurements
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Giant Damping-like Torque Efficiency via Synergistic Spin Hall and enhanced Orbital Hall Effects
Adding a NiW seed layer to a Ru/Pt/Co stack improves Ru hcp(002) texture and raises the measured damping-like torque efficiency, an effect the authors attribute to enhanced orbital Hall torque.