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Energy-efficient spintronic devices require a large spin-orbit torque (SOT) and low damping to excite magnetic precession. In conventional devices with heavy-metal/ferromagnet bilayers, reducing the ferromagnet thickness to $\sim$1 nm…

Antiferromagnetic spintronics exhibits ultra-high operational speed and stability in a magnetic field, holding promise for the realization of next-generation ultra-high-speed magnetic storage. However, theoretical exploration of the…

Materials Science · Physics 2025-01-08 Zhi Yan , Dan Qiao , Wentian Lu , Xinlong Dong , Xiaohong Xu

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…

Materials Science · Physics 2018-08-01 Yi Wang , Rajagopalan Ramaswamy , Hyunsoo Yang

Non-volatile flip-flops (NVFFs) using power gating techniques promise to overcome the soaring leakage power consumption issue with the scaling of CMOS technology. Magnetic tunnel junction (MTJ) is a good candidate for constructing the NVFF…

Emerging Technologies · Computer Science 2020-07-15 Ziyi Wang , Zhaohao Wang , Yansong Xu , Bi Wu , Weisheng Zhao

Write asymmetry, the significantly different write current for high-to-low and low-to-high resistance switching because of natural stochastic behaviors of magnetization, is a fundamental issue in magnetic random-access memory (MRAM). For…

Applied Physics · Physics 2021-10-26 Baiqing Jiang , Dongyang Wu , Qianwen Zhao , Kaihua Lou , Yuelei Zhao , Yan Zhou , C. Tian , Chong Bi

We use \textit{ab-initio} calculations to investigate spin-orbit torques (SOTs) in FeRh(001) deposited on W(100). Since FeRh undergoes a ferromagnetic-antiferromagnetic phase transition close to room temperature, we consider both phases of…

Materials Science · Physics 2021-02-23 Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

The discovery of atomic monolayer magnetic materials has stimulated intense research activities in the two-dimensional (2D) van der Waals (vdW) materials community. The field is growing rapidly and there has been a large class of 2D vdW…

Ferroelectric polarization switching in electrically controlled van der Waals multiferroic tunnel junctions (vdW-MFTJs) causes atomic migration, compromising device stability and fatigue resistance. Here we propose a fully magnetically…

Materials Science · Physics 2025-05-20 Zhi Yan , Xujin Zhang , Jianhua Xiao , Cheng Fang , Xiaohong Xu

The field of 2D magnetic materials has paved the way for the development of spintronics and nanodevices with new functionalities. Utilizing antiferromagnetic materials, in addition to layered van der Waals (vdW) ferromagnetic materials, has…

Materials Science · Physics 2023-10-05 Lishu Zhang , Hui Li , Yanyan Jiang , Zishen Wang , Tao Li , Sumit Ghosh

Spin-transfer torque magnetoresistive random access memory (STT-MRAM) is an attractive alternative to current random access memory technologies due to its non-volatility, fast operation and high endurance. STT-MRAM does though have…

Mesoscale and Nanoscale Physics · Physics 2018-08-27 Noriyuki Sato , Fen Xue , Robert M. White , Chong Bi , Shan X. Wang

Accurate prediction of electronic and optical excitations in van der Waals (vdW) materials is a long-standing challenge for density functional theory. The recently proposed Wannier-localized optimally-tuned screened range-separated hybrid…

Topological insulators (TI) and magnetic topological insulators (MTI) can apply highly efficient spin-orbit torque (SOT) and manipulate the magnetization with their unique topological surface states with ultra-high efficiency. Here, we…

Increasing dampinglike spin-orbit torque (SOT) is both of fundamental importance for enabling new research into spintronics phenomena and also technologically urgent for advancing low-power spin-torque memory, logic, and oscillator devices.…

Mesoscale and Nanoscale Physics · Physics 2019-06-12 Lijun Zhu , Lujun Zhu , Shengjie Shi , Manling Sui , D. C. Ralph , R. A. Buhrman

Effectively tuning magnetic state by using current is essential for novel spintronic devices. Magnetic van der Waals (vdW) materials have shown superior properties for the applications of magnetic information storage based on the efficient…

Materials Science · Physics 2025-09-30 Shaohua Yan , Shangjie Tian , Yang Fu , Fanyu Meng , Zhiteng Li , Hechang Lei , Shouguo Wang , Xiao Zhang

As spin-orbit-torque magnetic random-access memory (SOT-MRAM) is gathering great interest as the next-generation low-power and high-speed on-chip cache memory applications, it is critical to analyze the magnetic tunnel junction (MTJ)…

Applied Physics · Physics 2020-05-28 Xiang Li , Shy-Jay Lin , Mahendra DC , Yu-Ching Liao , Chengyang Yao , Azad Naeemi , Wilman Tsai , Shan X. Wang

Finding efficient ways of manipulating magnetic bits is one of the core goals in spintronic research. Electrically-generated spin-orbit torques (SOTs) are good candidates for this and the search for materials capable of generating…

Mesoscale and Nanoscale Physics · Physics 2020-08-31 Casper F. Schippers , Henk J. M. Swagten , Marcos H. D. Guimarães

Spin-orbit torque (SOT) is a promising switching mechanism for magnetic random-access memory (MRAM) as a result of the potential for improved switching speed and energy-efficiency. It is of particular interest to develop an SOT-MRAM device…

The field-free spin-orbit torque induced 180{\deg} reorientation of perpendicular magnetization is beneficial for the high performance magnetic memory. The antiferromagnetic material (AFM) can provide higher operation speed than the…

Mesoscale and Nanoscale Physics · Physics 2022-12-15 Zhengde Xu , Jie Ren , Zhengping Yuan , Yue Xin , Xue Zhang , Shuyuan Shi , Yumeng Yang , Zhifeng Zhu

Spin-Orbit Torque (SOT) Magnetic Random-Access Memory (MRAM) devices offer improved power efficiency, nonvolatility, and performance compared to static RAM, making them ideal, for instance, for cache memory applications. Efficient…

The interplay between spin reorientation and topological electronic structure in two-dimensional (2D) van der Waals (vdW) ferromagnets is central to understanding how magnetic anisotropy shapes charge transport. Although spin-reorientation…