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We present a low barrier magnet based compact hardware unit for analog stochastic neurons and demonstrate its use as a building-block for neuromorphic hardware. By coupling circular magnetic tunnel junctions (MTJs) with a CMOS based analog…

Emerging Technologies · Computer Science 2021-05-25 Samiran Ganguly , Kerem Y. Camsari , Avik W. Ghosh

Probabilistic Ising machines (PIMs) provide a path to solving many computationally hard problems more efficiently than deterministic algorithms on von Neumann computers. Stochastic magnetic tunnel junctions (S-MTJs), which are engineered to…

Energy-harvesting-powered computing offers intriguing and vast opportunities to dramatically transform the landscape of the Internet of Things (IoT) devices by utilizing ambient sources of energy to achieve battery-free computing. In order…

Emerging Technologies · Computer Science 2019-04-25 Arman Roohi , Ronald F DeMara

Spintronic devices are a promising beyond-CMOS device option thanks to their energy efficiency and compatibility with CMOS. To accurately capture their multi-physics dynamics, a rigorous treatment of both spin and charge and their…

Mesoscale and Nanoscale Physics · Physics 2022-01-21 Hai Li , Dmitri E. Nikonov , Chia-Ching Lin , Kerem Camsari , Yu-Ching Liao , Chia-Sheng Hsu , Azad Naeemi , Ian A. Young

Spiking neural networks aim to emulate the brain's properties to achieve similar parallelism and high-processing power. A caveat of these neural networks is the high computational cost to emulate, while current proposals for analogue…

Non-Boolean computing based on emerging post-CMOS technologies can potentially pave the way for low-power neural computing platforms. However, existing work on such emerging neuromorphic architectures have either focused on solely mimicking…

Emerging Technologies · Computer Science 2016-11-15 Abhronil Sengupta , Yong Shim , Kaushik Roy

Voltage driven magneto-electric (ME) switching of ferro-magnets has shown potential for future low-energy spintronic memories. In this paper, we first analyze two different ME devices viz. ME-MTJ and ME-XNOR device with respect to…

Emerging Technologies · Computer Science 2017-01-31 Akhilesh Jaiswal , Indranil Chakraborty , Kaushik Roy

Magnetic tunnel junctions (MTJs) are elementary units of magnetic memory devices. For high-speed and low-power data storage and processing applications, fast reversal by an ultrashort laser pulse is extremely important. We demonstrate…

We investigate the dependence of perpendicular and parallel spin transfer torque (STT) and tunneling magnetoresistance (TMR) on the insulator barrier energy in the magnetic tunnel junction (MTJ). We employed single orbit tight binding model…

Materials Science · Physics 2015-05-20 Chun-Yeol You , Jae-Ho Han , Hyun-Woo Lee

Emerging spin-torque (ST) phenomena may lead to ultra-low-voltage, high-speed nano-magnetic switches. Such current-based-switches can be attractive for designing low swing global-interconnects, like, clocking-networks and databuses. In this…

Mesoscale and Nanoscale Physics · Physics 2014-01-03 Mrigank Sharad , Kaushik Roy

The ever increasing demand for computational power combined with the predicted plateau for the miniaturization of existing silicon-based technologies has made the search for low power alternatives an industrial and scientifically engaging…

Mesoscale and Nanoscale Physics · Physics 2024-03-21 Victor H. González , Artem Litvinenko , Akash Kumar , Roman Khymyn , Johan Åkerman

The integration of converter-interfaced generation (CIG) from renewable energy sources poses challenges to the stability and transient behavior of electric power systems. Understanding the dynamic behavior of low-inertia power systems is…

Systems and Control · Electrical Eng. & Systems 2020-03-09 Rodrigo Henriquez-Auba , Jose D. Lara , Ciaran Roberts , Nathan Pallo , Duncan S. Callaway

A new spintronic nonvolatile memory cell analogous to 1T DRAM with non-destructive read is proposed. The cells can be used as neural computing units. A dual-circuit neural network architecture is proposed to leverage these devices against…

Emerging Technologies · Computer Science 2019-05-31 Andrew W. Stephan , Qiuwen Lou , Michael Niemier , X. Sharon Hu , Steven J. Koester

Spintronics logic devices based on majority gates formed by atomic-level arrangements of spins in the crystal lattice is considered. The dynamics of switching is modeled by time-dependent solution of the density-matrix equation with…

Mesoscale and Nanoscale Physics · Physics 2007-11-15 Dmitri E. Nikonov , George I. Bourianoff , Paolo A. Gargini

Significant scientific and technological progress in the field of spintronics is based on trilayer magnetic tunnel junction devices which principally rely on the physics of single barrier tunneling. While technologically relevant devices…

Mesoscale and Nanoscale Physics · Physics 2019-11-14 Abhishek Sharma , Ashwin. A. Tulapurkar , Bhaskaran Muralidharan

This paper introduces a novel oscillator that combines the tunability of spin Hall-driven nano oscillators with the high quality factor (Q) of high overtone bulk acoustic wave resonators (HBAR), integrating both reference and tunable…

Mesoscale and Nanoscale Physics · Physics 2018-01-22 Mustafa Mert Torunbalci , Tanay A. Gosavi , Kerem Y. Camsari , Sunil A. Bhave

Over the past decade a large family of spintronic devices have been proposed as candidates for replacing CMOS for future digital logic circuits. Using the recently developed Modular Approach framework, we investigate and identify the…

Mesoscale and Nanoscale Physics · Physics 2017-03-27 Samiran Ganguly , Kerem Yunus Camsari , Supriyo Datta

Neuromorphic computing aims to mimic both the function and structure of biological neural networks to provide artificial intelligence with extreme efficiency. Conventional approaches store synaptic weights in non-volatile memory devices…

Neural and Evolutionary Computing · Computer Science 2023-08-23 Peng Zhou , Alexander J. Edwards , Frederick B. Mancoff , Sanjeev Aggarwal , Stephen K. Heinrich-Barna , Joseph S. Friedman

Antiferromagnetic (AFM) spintronics has emerged as a subfield of spintronics, where an AFM N\'eel vector is used as a state variable. Efficient electric control and detection of the N\'eel vector are critical for spintronic applications.…

Materials Science · Physics 2024-06-07 Ding-Fu Shao , Evgeny Y. Tsymbal

Spin-orbit torque (SOT) based magnetic random access memory (MRAM) is envisioned as an emerging non-volatile memory due to its ultra-high speed and low power consumption. The field-free switching schema in SOT devices is of great interest…

Applied Physics · Physics 2020-07-03 Min Wang , Zhaohao Wang , Chao Wang , Weisheng Zhao
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