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The authors show that the magnetization of a magnetostrictive/piezoelectric multiferroic single-domain shape-anisotropic nanomagnet can be switched with very small voltages that generate strain in the magnetostrictive layer. This can be the…

Mesoscale and Nanoscale Physics · Physics 2015-03-17 Kuntal Roy , Supriyo Bandyopadhyay , Jayasimha Atulasimha

The advent of computational statistical disciplines, such as machine learning, is leading to a paradigm shift in the way we conceive the design of new compounds. Today computational science does not only provide a sound understanding of…

Materials Science · Physics 2019-11-07 Alessandro Lunghi , Stefano Sanvito

The brain, which uses redundancy and continuous learning to overcome the unreliability of its components, provides a promising path to building computing systems that are robust to the unreliability of their constituent nanodevices. In this…

Emerging Technologies · Computer Science 2018-10-17 Alice Mizrahi , Julie Grollier , Damien Querlioz , M. D. Stiles

Physical reservoir computing is a framework for brain-inspired information processing that utilizes nonlinear and high-dimensional dynamics in non-von-Neumann systems. In recent years, spintronic devices have been proposed for use as…

Mesoscale and Nanoscale Physics · Physics 2023-10-11 Kaito Kobayashi , Yukitoshi Motome

A new spin based logic device is proposed. It is comprised of a common free ferromagnetic layer separated by a tunnel junction from three inputs and one output with separate fixed layers. It has the functionality of a majority gate and is…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Dmitri E. Nikonov , George I. Bourianoff , Tahir Ghani

Spin-orbit torque-induced perpendicular magnetization switching has attracted much attention due to the advantages of nonvolatility, high density, infinite read/write counts, and low power consumption in spintronic applications. To achieve…

Inspired by ion-dominated synaptic plasticity in human brain, artificial synapses for neuromorphic computing adopt charge-related quantities as their weights. Despite the existing charge derived synaptic emulations, schemes of controlling…

Mesoscale and Nanoscale Physics · Physics 2019-12-06 Yi Cao , Andrew Rushforth , Yu Sheng , Houzhi Zheng , Kaiyou Wang

More-versatile memory is strongly desired for end-users to protect their information in the information era. In particular, bit-level switchable memory, from rewritable to read-only function, allows end-users to prevent any important data…

Applied Physics · Physics 2022-08-01 Yu Sheng , Weiyang Wang , Yongcheng Deng , Yang Ji , Houzhi Zheng , Kaiyou Wang

We demonstrate that thermally stable perpendicular magnetic tunnel junctions (pMTJs), widely used in spin-transfer torque magnetic random-access memory, can be actuated with nanosecond pulses to exhibit tunable stochastic behavior. This…

Mesoscale and Nanoscale Physics · Physics 2026-01-15 Ahmed Sidi El Valli , Michael Tsao , Dairong Chen , Andrew D. Kent

The electrically readable complex dynamics of robust and scalable magnetic tunnel junctions (MTJs) offer promising opportunities for advancing neuromorphic computing. In this work, we present an MTJ design with a free layer and two…

Noncentrosymmetric triangular magnets offer a unique platform for realizing strong quantum fluctuations. However, designing these quantum materials remains an open challenge attributable to a knowledge gap in the tunability of competing…

Antiferromagnetic hexagonal MnTe is a promising material for spintronic devices relying on the control of antiferromagnetic domain orientations. Here we report on neutron diffraction, magnetotransport, and magnetometry experiments on…

As a prototypical half-metallic ferromagnet, La0.67Sr0.33MnO3 (LSMO) has been extensively studied due to its versatile physical properties and great potential in spintronic applications. However, the weak perpendicular magnetic anisotropy…

Materials Science · Physics 2023-08-02 Enda Hua , Kunjie Dai , Qing Wang , Huan Ye , Kuan Liu , Jinfeng Zhang , Jingdi Lu , Kai Liu , Feng Jin , Lingfei Wang , Wenbin Wu

Ferromagnetic films with perpendicular magnetic anisotropy are of interest in spintronics and superconducting spintronics. Perpendicular magnetic anisotropy can be achieved in thin ferromagnetic multilayer structures, when the anisotropy is…

Mesoscale and Nanoscale Physics · Physics 2023-06-01 N. Satchell , S. Gupta , M. Maheshwari , P. M. Shepley , M. Rogers , O. Cespedes , G. Burnell

A prototype of magnetoresistive random access memory (MRAM) based on magnetic tunnel junctions (MTJ) was fabricated with crossed-anisotropy of magnetic layers on either side of the tunnelling barrier layer. It is demonstrated that the…

Materials Science · Physics 2007-05-23 A. N. Grigorenko , D. J. Mapps

The field of spintronics involves the study of both spin and charge transport in solid state devices with a view toward increasing their functionality and efficiency. Alternatively, the field of ultrafast magnetism focuses on the use of…

Mesoscale and Nanoscale Physics · Physics 2017-11-07 Yang Yang , R. B. Wilson , Jon Gorchon , Charles-Henri Lambert , Sayeef Salahuddin , Jeffrey Bokor

In-memory computing is a promising alternative to traditional computer designs, as it helps overcome performance limits caused by the separation of memory and processing units. However, many current approaches struggle with unreliable…

Nanoscale magnetic tunnel junction plays a pivotal role in magnetoresistive random access memories. Successful implementation depends on a simultaneous achievement of low switching current for the magnetization switching by spin-transfer…

Applied Physics · Physics 2018-05-09 K. Watanabe , B. Jinnai , S. Fukami , H. Sato , H. Ohno

Robust multi-level spin memory with the ability to write information electrically is a long-sought capability in spintronics, with great promise for applications. Here we achieve nonvolatile and highly energy-efficient magnetization…

Rotating the magnetization of a magnetostrictive nanomagnet with electrically generated mechanical strain dissipates miniscule amount of energy compared to any other rotation method and would have been the ideal method to write bits in…

Materials Science · Physics 2014-07-09 Ayan K. Biswas , Supriyo Bandyopadhyay , Jayasimha Atulasimha
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