6 papers
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…
Strongly asymmetric magnetization switching and programmable complete Boolean logic enabled by long-range intralayer Dzyaloshinskii-Moriya interaction
Qianbiao Liu, Long Liu, Guozhong Xing +1
Electrical switching of magnetization is central to spintronics. Despite the enormous efforts on the spin torques and the Dzyaloshinskii-Moriya interaction (DMI) effects, some fund…
A Two-Field-Scan Harmonic Hall Voltage Analysis For Fast, Accurate Quantification Of Spin-Orbit Torques In Magnetic Heterostructures
Xin Lin, Lijun Zhu
The efficiencies of the spin-orbit torques (SOTs) play a key role in the determination of the power consumption, integration density, and endurance of SOT-driven devices. Accurate…