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Spin logic devices based on negative differential resistance -enhanced anomalous Hall effect

International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1437-1448页

作者： hongming mou Ziyao Lu Yuchen Pu Zhaochu Luo Xiaozhong Zhang Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Artificial Microstructure and Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China

Owing to rapid developments in spintronics,spin-based logic devices have emerged as promising tools for next-generation computing technologies.This paper provides a comprehensive review of recent advancements in spin logic devices,particularly focusing on fundamental device concepts rooted in nanomagnets,magnetoresistive random access memory,spin–orbit torques,electric-field modu-lation,and magnetic domain walls.The operation principles of these devices are comprehensively analyzed,and recent progress in spin logic devices based on negative differential resistance-enhanced anomalous Hall effect is summarized.These devices exhibit reconfigur-able logic capabilities and integrate nonvolatile data storage and computing functionalities.For current-driven spin logic devices,negative differential resistance elements are employed to nonlinearly enhance anomalous Hall effect signals from magnetic bits,enabling reconfig-urable Boolean logic operations.Besides,voltage-driven spin logic devices employ another type of negative differential resistance ele-ment to achieve logic functionalities with excellent cascading ability.By cascading several elementary logic gates,the logic circuit of a full adder can be obtained,and the potential of voltage-driven spin logic devices for implementing complex logic functions can be veri-fied.This review contributes to the understanding of the evolving landscape of spin logic devices and underscores the promising pro-spects they offer for the future of emerging computing schemes.

关键词： spin logic spin–orbit torque negative differential resistance full-adder

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Magnetization of Co-Fe-Ta-B-O Amorphous Thin Films

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Chinese Physics Letters 2019年第7期36卷 103-106页

作者：熊成悦陈澄孙雯卢子尧牟鸿铭章晓中 Key Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Beijing 100084 Beijing National Center for Electron Microscopy Tsinghua University Beijing 100084 Centre for Brain-Inspired Computing Researchy Tsinghua University Beijing 100084 Research Institute for Magnetoelectronics & Weak Magnetic-field Detection College of Science China Three Gorges of University Yichang 443002 Institute of Microelectronics Tsinghua University Beijing 100084

An amorphous magnetic material system(Co20Fe47Ta20B13)1-xOx is fabricated by magneto sputtering. Three stages of magnetization behavior exist when oxygen content changes in the system. As the oxygen increases, the absence of percolation effect of magnetic nano-particles makes the multi-domain structure broken so that high coercivity appears in the samples with proper oxygen content. A temperature-dependent Stoner–Wohlfarth model is used to explain the magnetization properties at relatively high temperature. Magnetizations with magnetic field in and out of the sample plane are also investigated to prove the mechanisms. This work provides a systematic study of a new kind ofv amorphous magnetic system and is helpful for us to know more about this type of material.

关键词： An amorphous magnetic fabricated by magneto this type of material

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Exploring the function of an intergenic region in genome of pseudomonas aeruginosa with mutation generation system

Exploring the function of an intergenic region in genome of ...

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中国生物化学与分子生物学会第十届会员代表大会暨全国学术...

作者： Rui mou Lu Zhang hongming Yao Yongxin Jin Xuehan Wang Haijin Xu Xiuming Zhang Yanling Bai Mingqiang Qiao College of Life Science Nankai Universitythe Key Laboratory of Molecular Microbiology and Technology

Mutation Generation System(MGS) is a Mu transposon based mutation system which can induce 15bp random insertion in target DNA fragment in vitro to analyze the function of nucleic acid or amino acid sequences.It was used to study the function of intergenic region between PA5471- PA5472 in this article.First,the target intergenic region mutant library was constructed by MGS and the modified DNA fragments were fused with promoterless reporters in a shuttle plasmid pDN191acΩ.Furthermore,the function of

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