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Magnetic skyrmions are topologically-protected spin textures existing in helimagentic materials, which can be utilized as information carriers for non-volatile memories and logic circuits in spintronics. Searching simple and controllable…

介观与纳米尺度物理 · 物理学 2020-01-08 Ya-qing Zheng , Yong Wang

Implementation of skyrmion based energy efficient and high-density data storage devices requires aggressive scaling of skyrmion size. Ferrimagnetic materials are considered to be a suitable platform for this purpose due to their low…

介观与纳米尺度物理 · 物理学 2021-11-29 Md Mahadi Rajib , Walid Al Misba , Dhritiman Bhattacharya , Jayasimha Atulasimha

Despite the continuous advancements in size and robustness of real quantum devices, reliable large-scale quantum computers are not yet available. Hence, classical simulation of quantum algorithms remains crucial for testing new methods and…

Magnetic skyrmions have emerged as promising elements for encoding information towards biomimetic computing applications due to their pseudoparticle nature and efficient coupling to spin currents. A key hindrance for skyrmionic devices is…

材料科学 · 物理学 2025-01-13 Xiaoye Chen , Tommy Tai , Hui Ru Tan , Hang Khume Tan , Royston Lim , Pin Ho , Anjan Soumyanarayanan

Circular Dyson Brownian motion describes the Brownian dynamics of particles on a circle (periodic boundary conditions), interacting through a logarithmic, long-range two-body potential. Within the log-gas picture of random matrix theory, it…

统计力学 · 物理学 2024-06-11 Wouter Buijsman

Magnetic skyrmions, topologically stabilized spin textures, are promising candidates for future memory devices and non-conventional computing applications due to their enhanced stability, non-linear interactions, and low-power manipulation…

Quantum simulation of fermionic Hamiltonians is a leading application of quantum computing, but accurate execution on present-day hardware is limited by error accumulation in deep Trotter circuits. We present a device-matched…

Magnetic skyrmions are promising candidates for the next generation of spintronic devices due to their small size and topologically protected structure. One challenge for using these magnetic states in applications lies on controlling the…

介观与纳米尺度物理 · 物理学 2018-10-19 J. Brandão , D. A. Dugato , R. L. Seeger , J. C. Denardin , T. J. A. Mori , J. C. Cezar

Streaming data join is a critical process in the field of near-real-time data warehousing. For this purpose, an adaptive semi-stream join algorithm called CACHEJOIN (Cache Join) focusing non-uniform stream data is provided in the…

数据库 · 计算机科学 2019-11-11 M. Asif Naeem , Erum Mehmood , M G Abbas , Noreen Jamil

Magnetic skyrmions are particle-like topological spin configurations, which can carry binary information and thus are promising building blocks for future spintronic devices. In this work, we investigate the relationship between the…

应用物理 · 物理学 2020-03-25 Xue Liang , Xichao Zhang , Jing Xia , Motohiko Ezawa , Yuelei Zhao , Guoping Zhao , Yan Zhou

Spintronics is an important emerging technology for data storage and computation. In this field, magnetic skyrmion-based devices are attractive due to their small size and energy consumption. However, controlling the creation, deletion and…

材料科学 · 物理学 2022-05-31 Aijaz H. Lone , Selma Amara , Fernando Aguirre , Mario Lanza , H. Fariborzi

We theoretically investigated a method to detect a single skyrmion in a magnetic tunneling junction (MTJ) geometry. Using the tunneling Hamiltonian approach, we calculated the tunneling magnetoresistance (TMR) ratio of the…

介观与纳米尺度物理 · 物理学 2018-03-14 Keita Hamamoto , Naoto Nagaosa

Improvements in computing performance have significantly slowed down over the past few years owing to the intrinsic limitations of computing hardware. However, the demand for data computing has increased exponentially. To solve this…

介观与纳米尺度物理 · 物理学 2021-04-22 Sai Li , Wang Kang , Xichao Zhang , Tianxiao Nie , Yan Zhou , Kang L. Wang , Weisheng Zhao

Multiple neuromorphic applications require the tuning of two or more devices to a common signal. Various types of neuromorphic computation can be realized using spintronic oscillators, where the DC current induces magnetization precession,…

Magnetic skyrmions are topologically protected whirling spin textures that can be stabilized in magnetic materials in which a chiral interaction is present. Their limited size together with their robustness against the external…

介观与纳米尺度物理 · 物理学 2018-05-09 Davide Maccariello , William Legrand , Nicolas Reyren , Karin Garcia , Karim Bouzehouane , Sophie Collin , Vincent Cros , Albert Fert

Magnetic skyrmions are small swirling topological defects in the magnetization texture stabilized by the protection due to their topology. In most cases they are induced by chiral interactions between atomic spins existing in…

材料科学 · 物理学 2017-12-21 Albert Fert , Nicolas Reyren , Vincent Cros

Magnetic skyrmions, which are topological particle-like excitations in ferromagnets, have attracted a lot of attention recently. Skyrmionics is an attempt to use magnetic skyrmions as information carriers in next generation spintronic…

介观与纳米尺度物理 · 物理学 2015-03-26 Xichao Zhang , Motohiko Ezawa , Yan Zhou

In this work, we demonstrate that skyrmions can be nucleated in the free layer of a magnetic tunnel junction (MTJ) with Dzyaloshinskii-Moriya interactions (DMI) by a spin-polarized current with the assistance of stray fields from the pinned…

介观与纳米尺度物理 · 物理学 2018-05-21 Xueying Zhang , Wenlong Cai , Xichao Zhang , Zilu Wang , Zhi Li , Yu Zhang , Kaihua Cao , Na Lei , Wang Kang , Yue Zhang , Haiming Yu , Yan Zhou , Weisheng Zhao

Skyrmions have been proposed as new information carriers in racetrack memory devices. To realise such devices, a small size; high speed of propagation; and minimal skyrmion Hall angle are required. Synthetic antiferromagnets (SAFs) present…

介观与纳米尺度物理 · 物理学 2025-08-01 Christopher E. A. Barker , Charles Parton-Barr , Christopher H. Marrows , Olga Kazakova , Craig Barton

The miniaturization of transistors down to 5nm and beyond, plus the increasing complexity of integrated circuits, significantly aggravate short channel effects, and demand analysis and optimization of more design corners and modes.…

机器学习 · 计算机科学 2020-02-14 Mohammad Saeed Abrishami , Massoud Pedram , Shahin Nazarian