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Related papers: Dynamics of an Insulating Skyrmion under a Tempera…

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The static and dynamic properties of skyrmions have recently received increased attention due to the potential application of skyrmions as information carriers and for unconventional computing. While the current-driven dynamics has been…

We theoretically investigate the interaction between magnons and a Skyrmion-textured domain wall in a two-dimensional antiferromagnet and elucidate the resultant properties of magnon transport. Using supersymmetric quantum mechanics, we…

Mesoscale and Nanoscale Physics · Physics 2024-07-10 Seungho Lee , Kouki Nakata , Oleg Tchernyshyov , Se Kwon Kim

Skyrmions as well as skyrmion bags in magnetic thin films are promising candidates for future high-density memory devices. The observation of skyrmion bags in liquid crystals and their predicted existence in ferromagnetic films has sparked…

Materials Science · Physics 2024-11-28 Naim Ahmad , Chirag Kalouni , Abhay Singh Rajawat , Waseem Akhtar

Magnetic skyrmions are topologically-distinct swirls of magnetic moments which display particle-like behaviour, including the ability to undergo thermally-driven diffusion. In this paper we study the thermally activated motion of arrays of…

Mesoscale and Nanoscale Physics · Physics 2021-11-03 Yifan Zhou , Rhodri Mansell , Tapio Ala-Nissila , Sebastiaan van Dijken

We predict a thermodynamic magnon recoil effect for domain wall motions in the presence of temperature gradients. All current thermodynamic theories assert that a magnetic domain wall must move toward the hotter side, based on equilibrium…

Mesoscale and Nanoscale Physics · Physics 2015-10-01 Peng Yan , Yunshan Cao , Jairo Sinova

We study the magnetic dynamics of magnetoelectric antiferromagnetic thin films, where an unconventional boundary ferromagnetism coexists with the bulk N\'{e}el phase below the N\'{e}el temperature. The spin exchange between the two order…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Ricardo Zarzuela , Se Kwon Kim , Yaroslav Tserkovnyak

We study the quantum propagation of a Skyrmion in chiral magnetic insulators by generalizing the micromagnetic equations of motion to a finite-temperature path integral formalism, using field theoretic tools. Promoting the center of the…

Mesoscale and Nanoscale Physics · Physics 2017-12-05 Christina Psaroudaki , Silas Hoffman , Jelena Klinovaja , Daniel Loss

It has recently been shown that Skyrmions with a fixed size can exist in theories without a Skyrme term, providing the Skyrmion is located on a domain wall. Here we numerically compute domain wall Skyrmions of this type, in a…

High Energy Physics - Theory · Physics 2015-06-15 Paul Jennings , Paul Sutcliffe

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…

Materials Science · Physics 2017-12-21 Albert Fert , Nicolas Reyren , Vincent Cros

Recently spin textures called skyrmions have been discovered in certain chiral magnetic materials without spatial inversion symmetry, and have attracted enormous attention due to their promising application in spintronics since only a low…

Strongly Correlated Electrons · Physics 2013-06-18 Shi-Zeng Lin , Charles Reichhardt , Cristian D. Batista , Avadh Saxena

We present an analysis of heterogeneous dynamics in molecular dynamics simulations of a thin polymeric film, supported by an absorbing structured surface. Near the glass transition "immobile" domains occur throughout the film, yet the…

Soft Condensed Matter · Physics 2009-11-10 Arlette R. C. Baljon , Joris Billen , Rajesh Khare

Magnetic skyrmions form in chiral multilayers from the shrinking or fission of elongated stripe textures. Here we report an experimental and theoretical study of the temperature dependence of this stripe-to-skyrmion transition in…

Mesoscale and Nanoscale Physics · Physics 2022-04-22 Xiaoye Chen , Edwin Chue , Jian Feng Kong , Hui Ru Tan , Hang Khume Tan , Anjan Soumyanarayanan

Using both atomistic and particle-based simulations, we investigate the current-driven dynamics of skyrmions on two-dimensional periodic substrates when there are multiple skyrmions per substrate minimum. At zero drive, the system forms…

Mesoscale and Nanoscale Physics · Physics 2025-04-03 J. C. Bellizotti Souza , C. J. O. Reichhardt , C. Reichhardt , N. P. Vizarim , P. A. Venegas

Spontaneously emergent chirality is an issue of fundamental importance across the natural sciences. It has been argued that a unidirectional (chiral) rotation of a mechanical ratchet is forbidden in thermal equilibrium, but becomes possible…

Strongly Correlated Electrons · Physics 2015-04-23 M. Mochizuki , X. Z. Yu , S. Seki , N. Kanazawa , W. Koshibae , J. Zang , M. Mostovoy , Y. Tokura , N. Nagaosa

Extended numerical simulations enable to ascertain the diffusive behavior at finite temperatures of chiral walls and skyrmions in ultra-thin model Co layers exhibiting symmetric - Heisenberg - as well as antisymmetric -…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 Jacques Miltat , Stanislas Rohart , André Thiaville

We theoretically propose that an electric voltage can be generated by thermal gradient with a rotating skyrmion crystal confined in a magnetic disk. We find that the rotation of skyrmion crystal induced by diffusive thermal magnon currents…

Mesoscale and Nanoscale Physics · Physics 2023-04-20 Junnosuke Matsuki , Masahito Mochizuki

Skyrmions are nanoscale magnetic structures with features promising for future low-power memory or logic devices. In this work, we demonstrate novel scanning techniques based on nitrogen vacancy center magnetometry that simultaneously probe…

Mesoscale and Nanoscale Physics · Physics 2019-08-07 Alec Jenkins , Matthew Pelliccione , Guoqiang Yu , Xin Ma , Xiaoqin Li , Kang L. Wang , Ania C. Bleszynski Jayich

We study the collective dynamics of the Skyrmion crystal (SkX) in thin films of ferromagnetic metals resulting from the nontrivial Skyrmion topology. We show that the current-driven motion of the crystal reduces the topological Hall effect…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 Jiadong Zang , Maxim Mostovoy , Jung Hoon Han , Naoto Nagaosa

Magnetic skyrmions are particle-like objects with topologically-protected stability which can be set into motion with an applied current. Using a particle-based model we simulate current-driven magnetic skyrmions interacting with random…

Strongly Correlated Electrons · Physics 2017-08-09 Sebastian A. Diaz , C. J. O. Reichhardt , Daniel P. Arovas , Avadh Saxena , C. Reichhardt

Control of magnetic domain wall motion holds promise for efficient manipulation and transfer of magnetically stored information. Thermal magnon currents, generated by temperature gradients, can be used to move magnetic textures, from domain…

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