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We report a giant spin Hall effect (SHE) in {\beta}-Ta that generates spin currents intense enough to induce efficient spin-transfer-torque switching of ferromagnets, thereby providing a new approach for controlling magnetic devices that…

Materials Science · Physics 2015-06-04 Luqiao Liu , Chi-Feng Pai , Y. Li , H. W. Tseng , D. C. Ralph , R. A. Buhrman

Magnetic skyrmions are topologically protected states that are very promising for the design of the next generation of ultralow-power electronic devices. In this letter, we propose a magnetic tunnel junction based spin-transfer torque diode…

Mesoscale and Nanoscale Physics · Physics 2016-01-20 G. Finocchio , M. Ricci , R. Tomasello , A. Giordano , M. Lanuzza , V. Puliafito , P. Burrascano , B. Azzerboni , M. Carpentieri

We present tight-binding calculations of the spin torque in non-collinear magnetic tunnel junctions based on the non-equilibrium Green functions approach. We have calculated the spin torque via the effective local magnetic moment approach…

Other Condensed Matter · Physics 2007-05-23 A. Kalitsov , I. Theodonis , N. Kioussis , M. Chshiev , W. H. Butler , A. Vedyayev

The magnetic skyrmion-based spin transfer nano-oscillators (STNO) are the potential candidates for next-generation microwave signal generator and has gained popularity due to their performance, integrability and compatibility with existing…

Applied Physics · Physics 2023-06-09 Ravish Kumar Raj , Namita Bindal , Brajesh Kumar Kaushik

Switching magnetization in a perpendicular magnetic tunnel junction (pMTJ) via voltage controlled magnetic anisotropy (VCMA) has shown the potential to markedly reduce the switching energy. However, the requirement of an external magnetic…

Mesoscale and Nanoscale Physics · Physics 2017-05-18 Jiefang Deng , Gengchiau Liang , Gaurav Gupta

An array of spin torque oscillators (STOs) for practical applications such as pattern recognition was recently proposed, where several STOs are connected by a common nonmagnet. In this structure, in addition to the electric and/or magnetic…

Mesoscale and Nanoscale Physics · Physics 2019-01-24 Tomohiro Taniguchi

Magnetic resonances driven by current-induced torques are crucial tools to study magnetic materials but are very limited in frequency and mechanical efficiency. We propose an alternative mechanism, voltage-induced torque, to realize high…

Mesoscale and Nanoscale Physics · Physics 2022-08-17 Junyu Tang , Ran Cheng

Spin-orbit torque facilitates efficient magnetization switching via an in-plane current in perpendicularly magnetized heavy metal/ferromagnet heterostructures. The efficiency of spin-orbit-torque-induced switching is determined by the…

Impact of spin transfer torque (STT) on the write error rate of a voltage-torque-based magnetoresistive random access memory is theoretically analyzed by using the macrospin model. During the voltage pulse the STT assists or suppresses the…

Mesoscale and Nanoscale Physics · Physics 2019-06-04 Hiroshi Imamura , Rie Matsumoto

Next-generation spintronic sensors aim to overcome the limitations of traditional tunneling-magnetoresistance (TMR) devices, such as complex manufacturing, high $1/f$ noise, and significant offsets. This work presents a comprehensive…

Control of magnetism without using magnetic fields enables large-scale integration of spintronic devices for memory, computation and communication in the beyond-CMOS era. Mechanisms including spin torque transfer, spin Hall effect, and…

Materials Science · Physics 2017-03-08 Jun-Yang Chen , Li He , Jian-Ping Wang , Mo Li

Magnetic materials with strong perpendicular magnetic anisotropy are of great interest for the development of nonvolatile magnetic memory and computing technologies due to their high stabilities at the nanoscale. However, electrical…

Materials Science · Physics 2023-04-04 Lijun Zhu

This paper proposes a novel strategy for the current injection based control for distributed energy resources connected to weak grids through a voltage source converter experiencing faults. The current injection controller is no longer…

Systems and Control · Electrical Eng. & Systems 2019-08-13 Runfan Zhang , Branislav Hredzak

Herein, a bit-wise Convolutional Neural Network (CNN) in-memory accelerator is implemented using Spin-Orbit Torque Magnetic Random Access Memory (SOT-MRAM) computational sub-arrays. It utilizes a novel AND-Accumulation method capable of…

Machine Learning · Computer Science 2019-04-18 Arman Roohi , Shaahin Angizi , Deliang Fan , Ronald F DeMara

The concept of low-voltage depletion and accumulation of electron charge in semiconductors, utilized in field-effect transistors (FETs), is one of the cornerstones of current information processing technologies. Spintronics which is based…

This paper proposes a novel spiking artificial neuron design based on a combined spin valve/magnetic tunnel junction (SV/MTJ). Traditional hardware used in artificial intelligence and machine learning faces significant challenges related to…

Applied Physics · Physics 2025-06-10 Steven Louis , Hannah Bradley , Cody Trevillian , Andrei Slavin , Vasyl Tyberkevych

We propose the use of energy bandpass filtering approach in the magnetic tunnel junction device as a route to enhance the thermal spin transfer torque. Using the spin-resolved non-equilibrium Green's function formalism, we harness the…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 Pankaj Priyadarshi , Abhishek Sharma , Bhaskaran Muralidharan

We propose capacitively driven low-swing global interconnect circuit using a receiver that utilizes magnetoelectric (ME) effect induced magnetization switching to reduce the energy consumption. Capacitively driven wire has recently been…

Emerging Technologies · Computer Science 2018-03-01 Zubair Al Azim , Akhilesh Jaiswal , Indranil Chakraborty , Kaushik Roy

Voltage control of magnetism and spintronics have been highly desirable, but rarely realized. In this work, we show voltage-controlled spin-orbit torque (SOT) switching in W/CoFeB/MgO films with perpendicular magnetic anisotropy (PMA) with…

Materials Science · Physics 2021-02-04 Jinsong Xu , C. L. Chien

Electrical manipulation of spin textures inside antiferromagnets represents a new opportunity for developing spintronics with superior speed and high device density. Injecting spin currents into antiferromagnets and realizing efficient…

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