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Recently, unconventional spin-orbit torques (SOTs) with tunable spin generation open new pathways for designing novel magnetization control for cutting-edge spintronics innovations. A leading research thrust is to develop field-free…

Spintronic devices, such as non-volatile magnetic random access memories and logic devices, have attracted considerable attention as potential candidates for future high efficient data storage and computing technology. In a heavy metal or…

材料科学 · 物理学 2018-08-01 Yi Wang , Rajagopalan Ramaswamy , Hyunsoo Yang

Transition metal dichalcogenide (TMD) monolayers MXY (M=Mo, W, X(not equal to)Y=S, Se, Te) are two-dimensional polar semiconductors. Setting WSeTe monolayer as an example and using density functional theory calculations, we investigate the…

Spin-orbit torque (SOT) magnetization switching of ferromagnets with large perpendicular magnetic anisotropy has a great potential for the next-generation non-volatile magnetoresistive random-access memory (MRAM). It requires a…

介观与纳米尺度物理 · 物理学 2022-03-08 Tuo Fan , Nguyen Huynh Duy Khang , Soichiro Nakano , Pham Nam Hai

Electrical manipulation of magnetization by spin-orbit torque (SOT) has shown promise for realizing reliable magnetic memories and oscillators. To date, the generation of transverse spin current and SOT, whether it is of spin Hall effect…

材料科学 · 物理学 2019-02-20 Yong-Chang Lau , Hwachol Lee , Kohji Nakamura , Masamitsu Hayashi

Heavy metals with strong spin-orbit coupling (SOC) have been employed to generate spin current to control the magnetization dynamics by spin-orbit torque (SOT). Magnetic tunnel junction based on SOT (SOT-MTJ) is a promising application with…

介观与纳米尺度物理 · 物理学 2018-05-15 Jiaqi Zhou , Weisheng Zhao , Kaihua Cao , Shouzhong Peng , Zilu Wang , Arnaud Bournel

A large spin-dependent and electric field-tunable magnetoresistance of a two-dimensional electron system (2DES) is a key ingredient for the realization of many novel concepts for spin-based electronic devices. The low magnetoresistance…

Spin-orbit torque (SOT) driven deterministic control of the magnetization state of a magnet with perpendicular magnetic anisotropy (PMA) is key to next generation spintronic applications including non-volatile, ultrafast, and energy…

We present a systematic study of the electronic and magnetic properties of transition-metal (TM) atomic chains adsorbed on the zigzag single-wall carbon nanotubes (SWNTs). We considered the adsorption on the external and internal wall of…

其他凝聚态物理 · 物理学 2009-11-11 Engin Durgun , Salim Ciraci

Current-induced magnetization switching through spin-orbit torques (SOTs) is the fundamental building block of spin-orbitronics. The SOTs generally arise from the spin-orbit coupling of heavy metals. However, even in a heterostructure where…

材料科学 · 物理学 2017-09-22 Hongyu An , Takeo Ohno , Yusuke Kanno , Yuito Kageyama , Yasuaki Monnai , Hideyuki Maki , Ji Shi , Kazuya Ando

Polarons and spin-orbit (SO) coupling are distinct quantum effects that play a critical role in charge transport and spin-orbitronics. Polarons originate from strong electron-phonon interaction and are ubiquitous in polarizable materials…

Van der Waals (vdW) heterostructure of two-dimensional (2D) quantum materials offers a promising platform for efficient control of magnetization dynamics for non-volatile spin-based devices. However, energy-efficient field-free spin-orbit…

Spin-orbit torques (SOTs) from transition metal oxides (TMOs) in conjunction with magnetic materials have recently attracted tremendous attention for realizing high-efficient spintronic devices. SrRuO3 is a promising candidate among TMOs…

材料科学 · 物理学 2024-03-04 Sheng Li , Bin Lao , Zengxing Lu , Xuan Zheng , Kenan Zhao , Liguang Gong , Tao Tang , Keyi Wu , Run-Wei Li , Zhiming Wang

Current-induced spin-orbit torque (SOT) is regarded as a promising mechanism for driving neuromorphic behavior in spin-orbitronic devices. In principle, the strong SOT in heavy metal-based magnetic heterostructure is attributed to the…

介观与纳米尺度物理 · 物理学 2022-05-31 Tian-Yue Chen , Yu-Chan Hsiao , Wei-Bang Liao , Chi-Feng Pai

Colossal magnetoresistance (CMR) is highly applicable in spintronic devices such as magnetic sensors, magnetic memory, and hard drives. Typically, CMR is found in Weyl semimetals characterized by perfect electron-hole symmetry or…

介观与纳米尺度物理 · 物理学 2023-11-28 Yiwen Zhang , Bo Xie , Yue Yang , Yueshen Wu , Xin Lu , Yuxiong Hu , Yifan Ding , Jiadian He , Peng Dong , Jinghui Wang , Xiang Zhou , Jianpeng Liu , Zhu-Jun Wang , Jun Li

Realization of efficient spin-orbit torque switching of the N\'eel vector in insulating antiferromagnets is a challenge, often complicated by spurious effects. Quantifying the spin-orbit torques in antiferromagnet/heavy metal…

In this computational work based on density functional theory we study the electronic and electron transport properties of asymmetric multi-layer MoSSe junctions, known as Janus junctions. Focusing on 4-layer systems, we investigate the…

材料科学 · 物理学 2021-06-30 Shuanglong Liu , James N. Fry , Hai-Ping Cheng

Spin orbit torque (SOT) provides an efficient way of generating spin current that promises to significantly reduce the current required for switching nanomagnets. However, an in-plane current generated SOT cannot deterministically switch a…

Moir\'e transition metal dichalcogenide (TMD) systems provide a tunable platform for studying electron-correlation driven quantum phases. Such phases have so far been found at rational fillings of the moir\'e superlattice, and it is…

Spin-orbit torque (SOT) represents an energy efficient method to control magnetization in magnetic memory devices. However, deterministically switching perpendicular memory bits usually requires the application of an additional bias field…

应用物理 · 物理学 2018-10-03 Qianchang Wang , John Domann , Guoqiang Yu , Anthony Barra , Kang L. Wang , Gregory P. Carman