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This work represents integration of MTJ with 30nm FinFET for low voltage analog write operations and readout optimization for the p-bit or true random number generator (TRNG), where the induced p-bit, the probabilistic state of the magnetic…

新兴技术 · 计算机科学 2022-05-02 Thomas Egler , Hans Dittmann , Sunanda Thunder , Artur Useinov

We study spin-transfer-torque driven magnetization dynamics of a perpendicular magnetic tunnel junction (MTJ) nanopillar. Based on the combination of spin-torque ferromagnetic resonance and microwave spectroscopy techniques, we demonstrate…

介观与纳米尺度物理 · 物理学 2023-04-11 Kaiyuan Zhou , Lina Chen , Kequn Chi , Qingwei Fu , Zui Tao , Like Liang , Zhenyu Gao , Haotian Li , Hao Meng , Bo Liu , Tiejun Zhou , R. H. Liu

Domain-wall memory (DWM) has SRAM class access performance, low energy, high endurance, high density, and CMOS compatibility. Recently, shift reliability and processing-using-memory (PuM) proposals developed a need to count the number of…

新兴技术 · 计算机科学 2022-05-26 Prayash Dutta , Albert Lee , Kang L. Wang , Alex K. Jones , Sanjukta Bhanja

This paper investigates the impact of thermal stability relaxation in double-barrier magnetic tunnel junctions (DMTJs) for energy-efficient spin-transfer torque magnetic random access memories (STT-MRAMs) operating at the liquid nitrogen…

新兴技术 · 计算机科学 2022-05-10 Esteban Garzón , Raffaele De Rose , Felice Crupi , Lionel Trojman , Adam Teman , Marco Lanuzza

Telegraph noise caused by frequent switching of the magnetization in small magnetic devices has become a useful resource for probabilistic computing. Conventional theories have been based on a linearization of the fluctuations at the…

介观与纳米尺度物理 · 物理学 2024-07-04 Mehrdad Elyasi , Shun Kanai , Hideo Ohno , Shunsuke Fukami , Gerrit E. W. Bauer

We study the electro-physical properties of the Fe/MgO/Fe magnetic tunnel junctions (MTJ). Sample structures are fabricated on top of glass-ceramic substrates by e-beam evaporation in a relatively low vacuum (~10^-4 Torr). The influence of…

材料科学 · 物理学 2012-10-19 A. Filatov , A. Pogorelov , Ye. Pogoryelov

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…

材料科学 · 物理学 2017-03-08 Jun-Yang Chen , Li He , Jian-Ping Wang , Mo Li

We propose a new class of non-uniform superlattice magnetic tunnel junctions (Nu-SLTJs) with the Linear, Gaussian, Lorentzian, and P\"oschl-teller width and height based profiles manifesting a sizable enhancement in the TMR($\approx…

介观与纳米尺度物理 · 物理学 2023-03-31 Sabarna Chakraborti , Abhishek Sharma

Magnetic tunnel junctions (MTJ) have been successfully applied in various sensing application and digital information storage technologies. Currently, a number of new potential applications of MTJs are being actively studied, including…

Magnetic random access memory that uses magnetic tunnel junction memory cells is a high performance, non-volatile memory technology that goes beyond traditional charge-based memories. Today its speed is limited by the high magnetization of…

In recent years, true random number generators (TRNGs) based on magnetic tunnelling junction (MTJ) have become increasingly attractive. This is because MTJ-based TRNGs offer some advantages over traditional CMOS-based TRNGs, such as smaller…

量子物理 · 物理学 2023-03-28 Hong Jie Ng , Shuhan Yang , Zhaoyang Yao , Hyunsoo Yang , Charles C. -W. Lim

The transport properties of magnetic tunnel junctions (MTJs) are very sensitive to interface modifications. In this work we investigate both experimentally and theoretically the effect of asymmetric barrier modifications on the bias…

We report that low frequency (up to 200 kHz) noise spectra of magnetic tunnel junctions with areas ~10^{-10}cm^2$ at 10 Kelvin deviate significantly from the typical 1/f behavior found in large area junctions at room temperature. In most…

介观与纳米尺度物理 · 物理学 2015-05-20 B. Zhong , Y. Chen , S. Garzon , T. M. Crawford , R. A. Webb

Low barrier nanomagnets have attracted a lot of research interest for their use as sources of high quality true random number generation. More recently, low barrier nanomagnets with tunable output have been shown to be a natural hardware…

应用物理 · 物理学 2020-03-09 Punyashloka Debashis , Rafatul Faria , Kerem Y. Camsari , Supriyo Datta , Zhihong Chen

We comment on both recent progress and lingering puzzles related to research on magnetic tunnel junctions (MTJs). MTJs are already being used in applications such as magnetic-field sensors in the read heads of disk drives, and they may also…

其他凝聚态物理 · 物理学 2009-11-13 J. Z. Sun , D. C. Ralph

We present a circuit design of a spintronic oscillator based on magnetic tunnel junction. In this design, a dc current is passed through a magnetic tunnel junction which is connected to a feed-back wire below it. Any fluctuation in the…

介观与纳米尺度物理 · 物理学 2018-07-31 D. Dixit , K. Konishi , C. V. Tomy , Y. Suzuki , A. A. Tulapurkar

Stochastic p-Bit devices play a pivotal role in solving NP-hard problems, neural network computing, and hardware accelerators for algorithms such as the simulated annealing. In this work, we focus on Stochastic p-Bits based on high-barrier…

介观与纳米尺度物理 · 物理学 2023-06-06 X. H. Li , M. K. Zhao , R. Zhang , C. H. Wan , Y. Z. Wang , X. M. Luo , S. Q. Liu , J. H. Xia , G. Q. Yu , X. F. Han

Ferroelectric tunnel junctions (FTJs), which consist of two metal electrodes separated by a thin ferroelectric barrier, have recently aroused significant interest for technological applications as nanoscale resistive switching devices. So…

材料科学 · 物理学 2021-02-09 Jun Ding , Ding-Fu Shao , Ming Li , Li-Wei Wen , Evgeny Y. Tsymbal

We investigate electronic transport in epitaxial Fe(100)/MgO/Fe/MgO/Fe double magnetic tunnel junctions with soft barrier breakdown (hot spots). Specificity of these junctions are continious middle layer and Nitrogen doping of the MgO…

介观与纳米尺度物理 · 物理学 2012-04-27 D. Herranz , F. G. Aliev , C. Tiusan , M. Hehn , V. K. Dugaev , J. Barnas

In the absence of any external applied magnetic field, we have found that a magnetic tunnel junction (MTJ) can produce a significant output direct voltage under microwave radiation at frequencies, which are far from the ferromagnetic…

介观与纳米尺度物理 · 物理学 2015-06-24 Y. S. Gui , Y. Xiao , L. H. Bai , S. Hemour , Y. P. Zhao , D. Houssameddine , K. Wu , H. Guo , C. -M. Hu