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51 papers · 1 filter
Nanofluidic logic based on chiral skyrmion flows
Xichao Zhang, Jing Xia, Yan Zhou +4
Particle-like chiral magnetic skyrmions can flow in nanotracks and behave like chiral fluids. Using interacting flows to perform logical operations is an important topic in microfl…
Transformation of a cellular skyrmion to polyomino-like structures
Jing Xia, Xichao Zhang, Yan Zhou +3
Topological spin structures with transformable shapes may have potential implications on data storage and computation. Here, we demonstrate that a square cellular skyrmion on an ar…
Quantized Hall conductance in graphene by nonperturbative magnetic-field-containing relativistic tight-binding approximation method
Md. Abdur Rashid, Masahiko Higuchi, Katsuhiko Higuch
In this study, we conducted a numerical investigation on the Hall conductance () of graphene based on the magnetic energy band structure calculated using a nonperturbativ…
Chiral Skyrmions Interacting with Chiral Flowers
Xichao Zhang, Jing Xia, Oleg A. Tretiakov +5
The chiral nature of active matter plays an important role in the dynamics of active matter interacting with chiral structures. Skyrmions are chiral objects, and their interactions…
Reversible magnetic domain reorientation induced by magnetic field pulses with fixed direction
Xichao Zhang, Jing Xia, Oleg A. Tretiakov +5
Nanoscale magnetic domains with controllable configurations could be used for classical and quantum applications, where the switching of magnetization configurations is an essentia…
Laminar and transiently disordered dynamics of a magnetic skyrmion pipe flow
Xichao Zhang, Jing Xia, Oleg A. Tretiakov +5
The world is full of fluids that flow. The fluid nature of flowing skyrmionic quasiparticles is of fundamental physical interest and plays an essential role in the transport of man…
Reversible Transformation between Isolated Skyrmions and Bimerons
Kentaro Ohara, Xichao Zhang, Yinling Chen +9
Skyrmions and bimerons are versatile topological spin textures that can be used as information bits for both classical and quantum computing. The transformation between isolated sk…
Particle-like skyrmions interacting with a funnel obstacle
Xichao Zhang, Jing Xia, Xiaoxi Liu
The skyrmion-substrate interaction is an important issue to consider when studying particle-like skyrmions in nanostructures, which may strongly affect the skyrmion dynamics and le…
Bifurcation of a Topological Skyrmion String
Jing Xia, Xichao Zhang, Oleg A. Tretiakov +6
Manipulation of three-dimensional (3D) topological objects is of both fundamental interest and practical importance in many branches of physics. Here, we show by spin dynamics simu…
Qubits based on merons in magnetic nanodisks
Jing Xia, Xichao Zhang, Xiaoxi Liu +2
Merons and skyrmions are classical topological solitons. However, they will become quantum mechanical objects when their sizes are of the order of nanometers. Recently, quantum com…
Structural transition of skyrmion quasiparticles under compression
Xichao Zhang, Jing Xia, Xiaoxi Liu
The competition between external drives and interparticle interactions are important for the static and dynamic properties of topological quasiparticles in confined geometries. Her…
Universal quantum computation based on nanoscale skyrmion helicity qubits in frustrated magnets
Jing Xia, Xichao Zhang, Xiaoxi Liu +2
Skyrmions in frustrated magnets have the helicity degree of freedom, where two different configurations of Bloch-type skyrmions are energetically favored by the magnetic dipole-dip…
Nonlinear dynamics of topological helicity wave in a frustrated skyrmion string
Jing Xia, Xichao Zhang, Xiaoxi Liu +2
A skyrmion in frustrated magnetic system has the helicity degree of freedom. A skyrmion string is formed in a frustrated layered system, which is well described by the model o…
Mutual conversion between a magnetic Neel hopfion and a Neel toron
Shuang Li, Jing Xia, Laichuan Shen +3
Three-dimensional (3D) magnetic textures attract great attention from researchers due to their fascinating structures and dynamic behaviors. Magnetic hopfion is a prominent example…
Nonreciprocal dynamics of ferrimagnetic bimerons
Laichuan Shen, Jing Xia, Zehan Chen +8
Magnetic bimerons are topologically nontrivial spin textures in in-plane easy-axis magnets, which can be used as particle-like information carriers. Here, we report a theoretical s…
Skyrmion Dynamics in the Presence of Deformation
Zehan Chen, Xichao Zhang, Yan Zhou +1
Magnetic skyrmions are topological spin textures promising for future high-density and nonvolatile memory. It is crucial to understand the current-driven skyrmion dynamics in the p…
Dynamics of ferrimagnetic skyrmionium driven by spin-orbit torque
Xue Liang, Xichao Zhang, Laichuan Shen +4
Magnetic skyrmionium is a skyrmion-like spin texture with nanoscale size and high mobility. It is a topologically trivial but dynamically stable structure, which can be used as a n…
Dynamic transformation between a skyrmion string and a bimeron string in a layered frustrated system
Xichao Zhang, Jing Xia, Oleg A. Tretiakov +6
Frustrated topological spin textures have unique properties that may enable novel spintronic applications, such as helicity-based information storage and computing. Here, we report…
Configurable pixelated skyrmions on nanoscale magnetic grids
Xichao Zhang, Jing Xia, Keiichiro Shirai +5
Topological spin textures can serve as non-volatile information carriers. Here we study the current-induced dynamics of an isolated magnetic skyrmion on a nanoscale square-grid pin…
Current-induced dynamics of skyrmion tubes in synthetic antiferromagnetic multilayers
Jing Xia, Xichao Zhang, Kai-Yu Mak +5
Topological spin textures can be found in both two-dimensional and three-dimensional nanostructures, which are of great importance to advanced spintronic applications. Here we repo…
A Frustrated Bimeronium: Static Structure and Dynamics
Xichao Zhang, Jing Xia, Motohiko Ezawa +5
We show a topological spin texture called "bimeronium" in magnets with in-plane magnetization. It is a topological counterpart of skyrmionium in perpendicularly magnetized magnets…
Current-driven skyrmionium in a frustrated magnetic system
Jing Xia, Xichao Zhang, Motohiko Ezawa +7
Magnetic skyrmionium can be used as a nanometer-scale non-volatile information carrier, which shows no skyrmion Hall effect due to its special structure carrying zero topological c…
Static and dynamic properties of bimerons in a frustrated ferromagnetic monolayer
Xichao Zhang, Jing Xia, Laichuan Shen +5
Magnetic bimeron is a topological counterpart of skyrmions in in-plane magnets, which can be used as a spintronic information carrier. We report the static properties of bimerons w…
Current-Induced Helicity Reversal of a Single Skyrmionic Bubble Chain in a Nanostructured Frustrated Magnet
Zhipeng Hou, Qiang Zhang, Xichao Zhang +14
Helicity indicates the in-plane magnetic-moment swirling direction of a skyrmionic configuration. The ability to reverse the helicity of a skyrmionic bubble via purely electrical m…