Giant orbital Hall effect and orbital-to-spin conversion in , , and metallic heterostructures

G Sala, P Gambardella - Physical Review Research, 2022 - APS
The orbital Hall effect provides an alternative means to the spin Hall effect to convert a
charge current into a flow of angular momentum. Recently, compelling signatures of orbital …

Giant spin Hall effect in Cu–Tb alloy thin films

Z Xu, GD Hwee Wong, J Tang, E Liu… - … applied materials & …, 2020 - ACS Publications
We report the giant spin current generation in CuTb alloys arising from the spin Hall effect.
The maximum spin Hall angle from our CuTb-based magnetic heterostructures was found to …

Crystallinity Control of the Topological-Insulator Surface via Interfacial Engineering for Enhanced Spin-Orbit Torque

HY Poh, CCI Ang, GJ Lim, TL Jin, SH Lee, EK Koh… - Physical Review …, 2023 - APS
Topological insulators demonstrate high charge-spin conversion efficiency due to their spin-
momentum locking at the Dirac surface states. However, the surface states are sensitive to …

Anomalous Thermal-Assisted Spin–Orbit Torque-Induced Magnetization Switching for Energy-Efficient Logic-in-Memory

Z Zheng, Z Zhang, X Feng, K Zhang, Y Zhang, Y He… - ACS …, 2022 - ACS Publications
Spin–orbit torque (SOT) is widely considered as an effective route to manipulate magnetic
order in spintronic devices. The low power consumption and long endurance demands from …

Thermal behavior of spin-current generation in PtxCu1-x devices characterized through spin-torque ferromagnetic resonance

GDH Wong, WC Law, FN Tan, WL Gan, CCI Ang… - Scientific Reports, 2020 - nature.com
High temperature studies of spin Hall effect have often been neglected despite its profound
significance in real-world devices. In this work, high temperature spin torque ferromagnetic …

Engineering the Spin-Orbit-Torque Efficiency and Magnetic Properties of / Ferrimagnetic Multilayers by Stacking Order

M Martini, CO Avci, S Tacchi, CH Lambert… - Physical Review …, 2022 - APS
We measure the spin-orbit torques (SOTs), current-induced switching, and domain wall
(DW) motion in synthetic ferrimagnets consisting of Co/Tb layers with differing stacking order …

Direct spin accumulation quantification in ferromagnetic heterostructures using DC bias harmonic Hall measurement

HY Poh, CCI Ang, WL Gan, GJ Lim, WS Lew - Physical Review B, 2021 - APS
A technique for spin accumulation quantification, specifically in the ferromagnetic layer of
spin-orbit torque inducing heterostructures has been elusive. Here, we demonstrate an easy …

Non-negligible imaginary part of the spin-mixing conductance and its impact on magnetization dynamics in heavy-metal–ferromagnet bilayers

J Dubowik, P Graczyk, A Krysztofik, H Głowiński… - Physical Review …, 2020 - APS
In this paper we present experimental verification of the magnitude of the imaginary part of
the spin-mixing conductance in bilayers comprising heavy metals. We present results of …

Dependence of spin-orbit torque effective fields on magnetization uniformity in Ta/Co/Pt structure

F Luo, QY Wong, S Li, F Tan, GJ Lim, X Wang… - Scientific reports, 2019 - nature.com
The spin-orbit torque (SOT) effective fields, namely field-like and damping-like terms,
depend on the thicknesses of heavy metal (HM) and ferromagnetic metal (FM) layers, in a …

Role of interfacial contribution in the bulklike enhanced Dzyaloshinskii-Moriya interaction of multilayers

Z Zhao, Z Xie, Y Sun, Y Yang, Y Cao, L Liu, D Pan… - Physical Review B, 2023 - APS
Recently, magnetic multilayers composed of repetitive heavy metal/ferromagnetic bilayers
have been extensively studied due to their large Dyzaloshinskii-Moriya interaction (DMI) and …