6 papers
Universal scaling of the Anomalous Hall voltage of magnetic layer with the adjacent conducting layer
Zhihao Yan, Qianbiao Liu, Zhengxiao Li +1
The anomalous Hall voltage of magnetic heterostructures plays a key role as the indicator for the magnetization state and its interplay with a variety of spintronic effects. In thi…
Dominant spin Hall torque and negligible orbital Hall torque in α-W/ferromagnet heterostructures with artifacts-free angular momentum detectors
Taiyang Zhang, Lujun Zhu, Qianbiao Liu +1
α-phased W was theoretically predicted to have a negative spin Hall conductivity and a positive orbital Hall conductivity at the same time, leaving the physical origin of the curre…
Absence of orbital current torque in Ta/ferromagnet bilayers
Qianbiao Liu, Lijun Zhu
It has become a heated debate as to whether the orbital Hall effect of a material could generate a non-local orbital current and a non-zero spin-orbit torque on an adjacent magneti…
Enhancing z spin generation in trivial spin Hall materials for scalable, energy-efficient, field-free, complete spin-orbit torque switching applications
Qianbiao Liu, Lijun Zhu
Despite the remarkable efforts in the past two decades, it has remained a major challenge to achieve switching of perpendicularly magnetized spin-orbit torque devices in a scalable…
Physics Origin of Universal Unusual Magnetoresistance
Lijun Zhu, Qianbiao Liu, Xiangrong Wang
The discovery of the unusual magnetoresistance (UMR) during the rotation of magnetization in the plane perpendicular to the electric current, which has been typically attributed to…
Efficient generation of out-of-plane polarized spin current in polycrystalline heavy metal devices with broken electric symmetries
Qianbiao Liu, Xin Lin, Ariel Shaked +3
Spin currents of perpendicularly polarized spins (z spins) by an in-plane charge current have received blooming interest for the potential in energy-efficient spin-orbit torque swi…