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As an emerging post-CMOS Field Effect Transistor, Magneto-Electric FETs (MEFETs) offer compelling design characteristics for logic and memory applications, such as high-speed switching, low power consumption, and non-volatility. In this…

Hardware Architecture · Computer Science 2023-12-11 Deniz Najafi , Mehrdad Morsali , Ranyang Zhou , Arman Roohi , Andrew Marshall , Durga Misra , Shaahin Angizi

In this paper, spin-orbit torque (SOT) magnetoresistive random-access memory (MRAM) devices are leveraged to realize sigmoidal neurons and binarized synapses for a single-cycle analog in-memory computing (IMC) architecture. First, an analog…

Emerging Technologies · Computer Science 2020-12-07 Ramtin Zand

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

We demonstrate for the first time full-scale integration of top-pinned perpendicular MTJ on 300 mm wafer using CMOS-compatible processes for spin-orbit torque (SOT)-MRAM architectures. We show that 62 nm devices with a W-based SOT…

In this paper, the intrinsic physical characteristics of spin-orbit torque (SOT) magnetoresistive random-access memory (MRAM) devices are leveraged to realize sigmoidal neurons in neuromorphic architectures. Performance comparisons with the…

Emerging Technologies · Computer Science 2020-06-03 Brendan Reidy , Ramtin Zand

Spin-orbit torques (SOTs) have opened a new path to switch the magnetization in perpendicularly magnetized films and are of great interest due to their potential applications in novel data storage technology, such as the magnetic random…

Materials Science · Physics 2017-02-02 Pan He , Xuepeng Qiu , Vanessa L. Zhang , Yang Wu , Meng Hau Kuok , Hyunsoo Yang

Magnetic tunnel junction (MTJ)-based magnetic random-access memory (MRAM) is a promising platform for neuromorphic and in-memory computing owing to its non-volatility, high endurance, fast switching dynamics and CMOS compatibility. However,…

The spin-orbit torque induced by a topological insulator (TI) is theoretically examined for spin wave generation in a neighboring antiferromagnetic thin film. The investigation is based on the micromagnetic simulation of N\'{e}el vector…

Materials Science · Physics 2020-08-26 Xinyi Xu , Yuriy G. Semenov , Ki Wook Kim

Memory devices operating due to the fast proton transfer (PT) process are proposed by means of the first-principles calculations. Writing an information is performed using the electrostatic potential of the scanning tunneling microscopy…

Mesoscale and Nanoscale Physics · Physics 2015-11-26 Malgorzata Wierzbowska

Spin Transfer Torque Random Access Memory (STT-RAM) is an emerging Non-Volatile Memory (NVM) technology that has garnered attention to overcome the drawbacks of conventional CMOS-based technologies. However, such technologies must be…

Hardware Architecture · Computer Science 2024-01-29 Saeed SeyedFaraji , Markus Bichl , Asad Aftab , Semeen Rehman

Recent progresses in magnetoionics offer exciting potentials to leverage its non-linearity, short-term memory, and energy-efficiency to uniquely advance the field of physical reservoir computing. In this work, we experimentally demonstrate…

Future applications of spin-orbit torque will require new mechanisms to improve the efficiency for switching nanoscale magnetic tunnel junctions (MTJs), while also controlling the magnetic dynamics to achieve fast, nanosecond scale…

Mesoscale and Nanoscale Physics · Physics 2018-02-07 Shengjie Shi , Yongxi Ou , S. V. Aradhya , D. C. Ralph , R. A. Buhrman

A new approach to increase the downsize scalability of perpendicular STT-MRAM is presented. It consists in significantly increasing the thickness of the storage layer in out-of-plane magnetized tunnel junctions (pMTJ) as compared to…

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

Valence change memory (VCM) cells based on SrTiO$_3$ (STO), a perovskite oxide, are a promising type of emerging memory device. While the operational principle of most VCM cells relies on the growth and dissolution of one or multiple…

Reducing energy dissipation while increasing speed in computation and memory is a long-standing challenge for spintronics research. In the last 20 years, femtosecond lasers have emerged as a tool to control the magnetization in specific…

Spin-orbit-torque magnetic random access memory (SOT-MRAM) is a promising technology for the next generation of data storage devices. The main bottleneck of this technology is the high reversal current density threshold. This outstanding…

Mesoscale and Nanoscale Physics · Physics 2018-04-25 Yin Zhang , H. Y. Yuan , X. S. Wang , X. R. Wang

Non-volatile memristors offer a salient platform for artificial neural network (ANN), but the integration of different function blocks into one hardware system remains challenging. Here we demonstrate the implementation of brain-like…

Mesoscale and Nanoscale Physics · Physics 2023-05-22 Puyang Huang , Xinqi Liu , Yue Xin , Yu Gu , Albert Lee , Zhuo Xu , Peng Chen , Yu Zhang , Weijie Deng , Guoqiang Yu , Zhongkai Liu , Qi Yao , Yumeng Yang , Zhifeng Zhu , Xufeng Kou

An approach to the electrostatic control of $90^{\circ}$ magnetization rotation in the hybrid structures composed of topological insulators (TIs) and adjacent ferromagnetic insulators (FMI) is proposed and studied. The concept is based on…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Yuriy G Semenov , Xiaopeng Duan , Ki Wook Kim

The Perpendicular Shape Anisotropy Spin Transfer Torque Magnetic Random Access Memory (PSA-STT-MRAM) is a recent concept proposed to maintain the thermal stability of standard MRAM at small diameters, considering thick vertical pillars as…

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