Results 41 to 50 of about 1,505 (193)

Field-free spin-orbit-torque switching of a single ferromagnetic layer with fourfold in-plane magnetic anisotropy

APL Materials, 2023
We present the observation of field-free spin-orbit-torque (SOT) switching of magnetization in a ferromagnetic semiconductor (Ga,Mn)As film with four-fold in-plane magnetic anisotropy.
Kyoul Han, Kyung Jae Lee, Sanghoon Lee, Xinyu Liu, M. Dobrowolska, Jacek K. Furdyna   +5 more
doaj   +1 more source

Spin-orbit torque from a ferromagnetic metal

, 2019
The switching of magnetization by current-induced spin-orbit torque (SOT) has potential applications for energy-efficient spintronic devices. In the past, most conventional works have been focused on SOT in heavy metals. Here the SOT from a ferromagnetic
Liu, Yuxiang, Razavi, Seyed Armin, Wu, Hao, Wong, Kin L., Yin, Gen, Li, Xiang, Shao, Qiming, Wang, Kang L.   +7 more
core   +1 more source

Role of dimensional crossover on spin-orbit torque efficiency in magnetic insulator thin films

Nature Communications, 2018
The spin-orbit torque (SOT) induced magnetic switching makes metal/magnetic insulators bilayers preferred in the energy efficient spintronic applications. Here the authors show SOT switching in W/TmIG bilayers and reveal the dimension crossover of SOT as
Qiming Shao, Chi Tang, Guoqiang Yu, Aryan Navabi, Hao Wu, Congli He, Junxue Li, Pramey Upadhyaya, Peng Zhang, Seyed Armin Razavi, Qing Lin He, Yawen Liu, Pei Yang, Se Kwon Kim, Cheng Zheng, Yizhou Liu, Lei Pan, Roger K. Lake, Xiufeng Han, Yaroslav Tserkovnyak, Jing Shi, Kang L. Wang   +21 more
doaj   +1 more source

Development of a Three‐Axis Planar Hall Magnetoresistance Sensor Using a Superparamagnetic Nanoparticle‐Based Flux Guide

Advanced Functional Materials, EarlyView.
A printed superparamagnetic nanoparticle‐based flux guide enables the realization of a hysteresis‐free three‐axis magnetic sensor. This innovative architecture efficiently redirects out‐of‐plane fields to planar sensing elements, facilitating simultaneous vector detection without complex reset protocols.
Changyeop Jeon, Mijin Kim, Keonmok Kim, Byeonghwa Lim, Bibhutibhusan Nayak, Youngdo Jung, Bo‐Yeon Lee, Taehyeong Jeon, Jinwoo Kim, Sunjong Oh, CheolGi Kim   +10 more
wiley   +1 more source

Time‐Resolved Magnetization Switching Dynamics Driven by Orbital Torques

Advanced Functional Materials, EarlyView.
Du et al. reveal nanosecond magnetization switching driven by orbital currents using time‐resolved Hall detection. The measurements separate domain nucleation from domain wall propagation and show that Joule heating strongly assists switching by lowering energy barriers.
Ao Du, Shilei Ding, Min‐Gu Kang, Marco Hoffmann, Pietro Gambardella   +4 more
wiley   +1 more source

Magnetic Magnetic switching of Ta/CoFeB/MgO heterostructures via Spin-Orbit Torque for memory applications

, 2022
LAUREA MAGISTRALENel panorama delle tecnologie per le memorie emergenti, le giunzioni a effetto tunnel con anisotropia magnetica perpendicolare hanno attratto grande interesse grazie alla loro scalabilità, la loro stabilità termica e la possibilita ...
FETTIZIO, MATTEO
core  

Enhanced spin–orbit torque efficiency in Pt/Co/Ho heterostructures via inserting Ho layer

APL Materials, 2020
Spin–orbit torque (SOT) is a promising approach to manipulate the magnetization for high-performance spintronic applications. In conventional SOT heterostructures with heavy metal (HM)/ferromagnet layers, the SOT efficiency is determined by the charge-to-
Tianli Jin, Wai Cheung Law, Durgesh Kumar, Feilong Luo, Qi Ying Wong, Gerard Joseph Lim, Xuan Wang, Wen Siang Lew, S. N. Piramanayagam   +8 more
doaj   +1 more source

Room‐Temperature Skyrmionic Synapse in 2D Ferromagnet Fe3GaTe2 Operating via Collective Spin Texture Transformation

Advanced Materials, EarlyView.
We demonstrate a neuromorphic synapse in 2D Fe3GaTe2 flakes. The device operates via a current‐driven transformation from a skyrmion‐lattice to a stripe‐domain state, yielding a linear anomalous Hall resistance response with a tunable slope to enable multiply‐accumulate operations. Simulations confirm its viability in artificial neural networks.
Jixiang Huang, Tongji Zhu, PeiYu Cai, Xiaoming Ma, Zhen Wang, Ruifu Zhang, Yi Hao, Jingdi Lu, Liubing He, Jun Xu, Yuejie Zhang, Wanjun Jiang, Jing Tao, Shiming Lei, Pavel Parchinskiy, Jing Teng, Lingfei Wang, Wei Niu, Elton J.G. Santos, Xiaoqian Zhang, Peng Li   +20 more
wiley   +1 more source

Spin Hall Magnetoresistance and Spin–Orbit Torque Efficiency in Pt/FeCoB Bilayers [PDF]

, 2022
The spin Hall magnetoresistance (SMR) of Pt/FeCoB bilayers with in-plane magnetocrystalline anisotropy was analyzed with respect to a second-order effect in the sensing current, which acts, through the spin Hall effect in Pt, as a torque on the ...
Grochot, Krzysztof, Magni, Alessandro, Ocker, Berthold, Kuepferling, Michaela, Basso, Vittorio, Skowronski, Witold, Langer, Juergen, Lazarski, Stanislaw, Meggiato, Nicola, Sola, Alessandro, Soares, Gabriel, Khanjani, Mehran Vafaee   +11 more
core   +1 more source

Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures

Advanced Materials, EarlyView.
An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko, Jaimin Kang, Su Jae Kim, Hanhwi Jang, Do‐Kyeong Nam, Minseok Kang, Sunghoon Kim, Yeon Sik Jung, Se‐Young Jeong, Kab‐Jin Kim, Byong‐Guk Park   +10 more
wiley   +1 more source