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Magnetic skyrmions are topologically protected nanoscale spin textures exhibiting fascinating physical behaviors. Recent observations of room temperature N\'eel-type skyrmions in magnetic multilayer films are an important step towards their…

Mesoscale and Nanoscale Physics · Physics 2018-10-19 Senfu Zhang , Junwei Zhang , Yan Wen , Eugene M. Chudnovsky , Xixiang Zhang

To enable functional skyrmion based spintronic devices, the controllable generation and manipulation of skyrmions is essential. While the generation of skyrmions by using a magnetic geometrical constriction has already been demonstrated,…

The well-known Hall effect describes the transverse deflection of charged particles (electrons or holes) in an electric-current carrying conductor under the influence of perpendicular magnetic fields, as a result of the Lorentz force.…

Altermagnets have been identified as the third category of magnetic materials, exhibiting momentum-dependent spin splitting characterized by even powers of momentum. In this study, we show that when subjected to elliptically polarized…

Mesoscale and Nanoscale Physics · Physics 2025-12-12 Sayed Ali Akbar Ghorashi , Qiang Li

Skyrmions, topologically protected textures, have been observed in different fields of nanotechnology and have emerged as promising candidates for different applications due to their topological stability, low-power operation, and dynamic…

Topology establishes a unifying framework for a diverse range of scientific areas including particle physics, cosmology, and condensed matter physics. One of the most fascinating manifestations of topology in the context of condensed matter…

Being ubiquitous, solitons have particle-like properties, exhibiting behaviour often associated with atoms. Bound solitons emulate dynamics of molecules, though solitonic analogues of polymeric materials have not been considered yet. Here…

Pattern Formation and Solitons · Physics 2023-08-16 Hanqing Zhao , Boris A. Malomed , Ivan I. Smalyukh

Magnetic skyrmions are highly promising candidates for future spintronic applications such as skyrmion racetrack memories and logic devices. They exhibit exotic and complex dynamics governed by topology and are less influenced by defects,…

Magnetic skyrmions are swirling spin textures with topologically protected noncoplanarity. Recently, skyrmions with the topological number of unity have been extensively studied in both experiment and theory. We here show that a skyrmion…

Strongly Correlated Electrons · Physics 2018-10-24 Ryo Ozawa , Satoru Hayami , Yukitoshi Motome

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 with chiral nanostructures can lead to intriguing…

Mesoscale and Nanoscale Physics · Physics 2023-12-29 Xichao Zhang , Jing Xia , Oleg A. Tretiakov , Motohiko Ezawa , Guoping Zhao , Yan Zhou , Xiaoxi Liu , Masahito Mochizuki

A novel form of quantum control is proposed by applying twisted-light also known as optical vortex beams to drive ultra-narrow atomic transitions in neutral Ca, Mg, Yb, Sr, Hg and Cd bosonic isotopes. This innovative all-optical…

Atomic Physics · Physics 2025-06-30 T. Zanon-Willette , F. Impens , E. Arimondo , D. Wilkowski , A. V. Taichenachev , V. I. Yudin

Topological quasiparticles of light, such as classical and quantum optical skyrmions, have so far relied on fully coherent or pure quantum states whose topology is encoded in the entanglement between polarization and two-dimensional spatial…

Quantum Physics · Physics 2026-04-28 Amit Kam , Charles Roques-Carmes , Shai Tsesses , Aviv Karnieli

When spin polarised electrons flow through a magnetic texture a transfer torque is generated. We examine the effect of this torque on skyrmions and skyrmion bags, skyrmionic structures of arbitrary integer topological degree, in thin…

Materials Science · Physics 2021-04-07 Charles Kind , David Foster

Non-Hermitian topological systems are the newest additions to the growing field of topological matter. In this work, we report of the light-driven exceptional physics in a multi-Weyl semi-metal. The driving is not only a key ingredient to…

Mesoscale and Nanoscale Physics · Physics 2021-05-26 Debashree Chowdhury , Ayan Banerjee , Awadhesh Narayan

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 non-volatile information carrier for next-generation…

Mesoscale and Nanoscale Physics · Physics 2021-11-25 Xue Liang , Xichao Zhang , Laichuan Shen , Jing Xia , Motohiko Ezawa , Xiaoxi Liu , Yan Zhou

In this theoretical work, we propose an all-optical method for fast, precise manipulation of two-dimensional multilayers by transferring orbital angular momentum from phase-structured light (e.g. vortex beams) to a 2D material flake. We…

Materials Science · Physics 2025-08-01 Zhiren He , Prathap Kumar Jharapla , Nicolas Leconte , Jeil Jung , Guru Khalsa

The topological Hall effect, driven by the exchange interaction between conduction electrons and topological magnetic textures such as skyrmions, is a powerful probe for investigating the topological properties of magnetic materials.…

Materials Science · Physics 2026-03-31 Hyuncheol Kim , Kai-Xuan Zhang , Yu-Hang Li , Giung Park , Ran Cheng , Je-Geun Park

Non-interacting particles exhibiting Brownian motion have been observed in many occasions of sciences, such as molecules suspended in liquids, optically trapped microbeads, and spin textures in magnetic materials. In particular, a detailed…

Mesoscale and Nanoscale Physics · Physics 2020-11-17 Le Zhao , Zidong Wang , Xichao Zhang , Xue Liang , Jing Xia , Keyu Wu , Heng-An Zhou , Yiqing Dong , Guoqiang Yu , Kang L. Wang , Xiaoxi Liu , Yan Zhou , Wanjun Jiang

Magnetic monopoles, despite their ongoing experimental search as elementary particles, have inspired the discovery of analogous excitations in condensed matter systems. In chiral condensed matter systems, emergent monopoles are responsible…

Soft Condensed Matter · Physics 2023-10-11 Jung-Shen B. Tai , Andrew J. Hess , Jin-Sheng Wu , Ivan I. Smalyukh

Magnetic skyrmions are key candidates for novel memory, logic, and neuromorphic computing. An essential property is their topological protection caused by the whirling spin texture as described by a robust integer winding number. However,…

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