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Spin transfer torque (STT) affords magnetic nanodevices the potential to act as memory, computing, and microwave elements operating at ultra-low currents and at a low energy cost. Spin transfer torque is not only effective in manipulating…

Mesoscale and Nanoscale Physics · Physics 2014-09-19 Y. Zhou , E. Iacocca , A. Awad , R. K. Dumas , F. C. Zhang , H. B. Braun , J. Åkerman

Spin torque nano oscillators (STNO) are nano-scale devices that can convert a direct current into short wave-length spin-wave excitations in a ferromagnetic layer. We show that arrays of STNO can be used to create directional spin-wave…

Mesoscale and Nanoscale Physics · Physics 2016-11-25 Ferran Macià , Frank. C. Hoppensteadt , Andrew D. Kent

Spin-orbit torque (SOT) can drive sustained spin wave (SW) auto-oscillations in a class of emerging microwave devices known as spin Hall nano-oscillators (SHNOs), which have highly non-linear properties governing robust mutual…

Magnetic skyrmions are textures behaving as quasiparticles which are topologically different from other states. Their discovery in systems with broken inversion symmetry sparked the search for materials containing such magnetic phase at…

Magnetic skyrmions are vortex-like, swirls of magnetisation whose topological protection and particle-like nature have suggested them to be suitable for a number of novel spintronic devices. One such application is skyrmionic computing,…

Magnetic skyrmions are topological quasiparticles with great potential for applications in future information storage and processing devices because of their nanoscale size, high stability, and large velocity. Recently, the high-frequency…

Applied Physics · Physics 2019-08-14 Xing Chen , Wang Kang , Daoqian Zhu , Na Lei , Xichao Zhang , Yan Zhou , Youguang Zhang , Weisheng Zhao

Magnetic skyrmions are topologically protected nanoscale objects, which are promising building blocks for novel magnetic and spintronic devices. Here, we investigate the dynamics of a skyrmion driven by a spin wave in a magnetic nanowire.…

Mesoscale and Nanoscale Physics · Physics 2015-08-28 Xichao Zhang , Motohiko Ezawa , Dun Xiao , G. P. Zhao , Yaowen Liu , Yan Zhou

Magnetic skyrmions, due to their topological stability and high mobility, are strong candidates for information carriers in spintronic devices. To advance their practical applications, a detailed understanding of their nucleation and…

Materials Science · Physics 2025-09-09 Tamali Mukherjee , V Satya Narayana Murthy , Banasree Sadhukhan

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…

Mesoscale and Nanoscale Physics · Physics 2020-01-08 Ya-qing Zheng , Yong Wang

Skyrmion-based spin torque nano-oscillators are potential next-generation microwave signal generators. However, ferromagnetic skyrmion-based spin torque nano-oscillators cannot reach high oscillation frequencies. In this work, we propose to…

Mesoscale and Nanoscale Physics · Physics 2019-01-31 Laichuan Shen , Jing Xia , Guoping Zhao , Xichao Zhang , Motohiko Ezawa , Oleg A. Tretiakov , Xiaoxi Liu , Yan Zhou

Magnetic skyrmions are nano-scale magnetic whirls that can be driven by currents via spin torques. They are promising candidates for spintronic devices such as the racetrack memory, where a motion along the uniform current is typically…

Mesoscale and Nanoscale Physics · Physics 2025-10-08 Ismael Ribeiro de Assis , Ingrid Mertig , Börge Göbel

Recent years have witnessed an enormous rise in research interest in magnetic skyrmions owing to their capability to improve over contemporary spintronic devices. An overview of the various magnetic interactions responsible for the…

We report on the first experimental demonstration of majority logic operation using spin waves in a scaled device with an in-line input and output layout. The device operation is based on the interference of spin waves generated and…

Mesoscale and Nanoscale Physics · Physics 2021-06-22 Florin Ciubotaru , Giacomo Talmelli , Thibaut Devolder , Odysseas Zografos , Marc Heyns , Christoph Adelmann , Iuliana P. Radu

We study azimuthal spin-wave (SW) excitations in a circular ferromagnetic nanodot in different inhomogeneous, topologically non-trivial magnetization states, specifically, vortex, Bloch-type skyrmion and N\'eel-type skyrmion states.…

Mesoscale and Nanoscale Physics · Physics 2018-02-28 M. Mruczkiewicz , P. Gruszecki , M. Krawczyk , K. Y. Guslienko

The emerging field of nano-magnonics utilizes high-frequency waves of magnetization - the spin waves - for the transmission and processing of information on the nanoscale. The advent of spin-transfer torque has spurred significant advances…

Mesoscale and Nanoscale Physics · Physics 2018-07-06 Boris Divinskiy , Vladislav E. Demidov , Sergei Urazhdin , Ryan Freeman , Anatoly B. Rinkevich , Sergej O. Demokritov

Magnetic skyrmions are promising candidates for future information technology. Here, we present a micromagnetic study of isolated skyrmions and skyrmion clusters in ferromagnetic nanodisks driven by the spin-polarized current with spatially…

Mesoscale and Nanoscale Physics · Physics 2018-05-16 Wenjing Jiang , Jing Xia , Xichao Zhang , Yifan Song , Chuang Ma , Hans Fangohr , G. P. Zhao , Xiaoxi Liu , Weisheng Zhao , Yan Zhou

Magnetic skyrmions have been in the spotlight since their observation in technologically relevant systems at room temperature. More recently, there has been increasing interest in additional quasiparticles that may exist as…

Mesoscale and Nanoscale Physics · Physics 2023-02-08 Runze Chen , Yu Li , Vasilis F. Pavlidis , Christoforos Moutafis

Using micromagnetic simulation, we investigate the self-sustained oscillation of magnetic skyrmion in a ferromagnetic circular nanodot, driven by spin-torque which is generated from a reference layer of a circular nanopillar device. We…

Mesoscale and Nanoscale Physics · Physics 2019-08-19 Debasis Das , Bhaskaran Muralidharan , Ashwin Tulapurkar

The use of spin transfer nano-oscillators (STNOs) to generate microwave signal in nanoscale devices have aroused tremendous and continuous research interest in recent years. Their key features are frequency tunability, nanoscale size, broad…

Mesoscale and Nanoscale Physics · Physics 2013-02-27 Zhongming Zeng , Giovanni Finocchio , Hongwen Jiang

In magnonics, an emerging branch of wave physics characterized by low-energy consumption, it is highly desirable to realize circuit elements within the scope of spin-wave computing. Here, based on numerical simulations, we demonstrate the…

Mesoscale and Nanoscale Physics · Physics 2020-09-30 Krzysztof Szulc , Piotr Graczyk , Michał Mruczkiewicz , Gianluca Gubbiotti , Maciej Krawczyk