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Origins of transverse voltages generated by applied thermal gradients and applied electric fields in ferrimagnetic-insulator/heavy-metal bilayers
Arnab Bose, Rakshit Jain, Jackson J. Bauer +3
We compare thermal-gradient-driven transverse voltages in ferrimagnetic-insulator/heavy-metal bilayers (Tm3Fe5O12/W and Tm3Fe5O12/Pt) to corresponding electrically-driven transvers…
Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
Lijun Zhu, Daniel C. Ralph, Robert A Buhrman
Efficient generation of spin-orbit torques (SOTs) is central for the exciting field of spin-orbitronics. Platinum, the archetypal spin Hall material, has the potential to be an out…
Unveiling the mechanism of bulk spin-orbit torques within chemically disordered FePt single layers
Lijun Zhu, Daniel C. Ralph, Robert A. Buhrman
Recent discovery of spin-orbit torques (SOTs) within magnetic single-layers has attracted attention in the field of spintronics. However, it has remained elusive as to how to under…
Interfacial and bulk spin Hall contributions to field-like spin-orbit torque generated by Iridium
Sutapa Dutta, Arnab Bose, A. A. Tulapurkar +2
We present measurements of spin orbit torques generated by Ir as a function of film thickness in sputtered Ir/CoFeB and Ir/Co samples. We find that Ir provides a damping-like compo…
Fully Spin-transparent magnetic interfaces enabled by insertion of a paramagnetic NiO layer
Lijun Zhu, Lujun Zhu, Robert Buhrman
Spin backflow and spin-memory loss have been well established to considerably lower the interfacial spin transmissivity of metallic magnetic interfaces and thus the energy efficien…
Lack of simple correlation between switching current density and spin-orbit torque efficiency of perpendicularly magnetized spin-current generator/ferromagnet heterostructures
Lijun Zhu, D. C. Ralph, R. A. Buhrman
Spin-orbit torque can drive electrical switching of magnetic layers. Here, we report that at least for micrometer-sized samples there is no simple correlation between the efficienc…