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Magnetic nano-skyrmions develop quantized helicity excitations, and the quantum tunneling between nano-skyrmions possessing distinct helicities is indicative of the quantum nature of these particles. Experimental methods capable of…

介观与纳米尺度物理 · 物理学 2024-01-09 Christina Psaroudaki , Elias Peraticos , Christos Panagopoulos

We propose a framework to construct a real-space spin model based on the inverse Hamiltonian design. The method provides an efficient way of realizing unconventional topological spin textures by optimizing the interaction parameters. In…

强关联电子 · 物理学 2025-05-01 Kazuki Okigami , Satoru Hayami

Magnetic skyrmions are topologically protected spin structures that naturally emerge in magnetic materials. While a vast amount of effort has gone into the study of their properties, their counterpart of opposite topological charge, the…

强关联电子 · 物理学 2021-10-01 Juan C. Criado , Peter D. Hatton , Sebastian Schenk , Michael Spannowsky , Luke A. Turnbull

The magnetic exchange interaction is the one of the key factors governing the basic characteristics of magnetic systems. Unlike the symmetric nature of the Heisenberg exchange interaction, the interfacial Dzyaloshinskii-Moriya interaction…

Dzyaloshinskii-Moriya interaction (DMI) plays a crucial role in stabilizing the exotic topologically stable skyrmion spin textures in the noncentrosymmetric crystals. The recent discovery of biskyrmions and skyrmions in the globally…

Skyrmions, topologically stable magnetic solitons characterized by whirling magnetization in nanoscale magnetic elements, show promise information carriers in spintronics and spin-based quantum computing due to their unique properties:…

介观与纳米尺度物理 · 物理学 2024-11-08 Suyeong Jeong , Dae-Han Jung , Hee-Sung Han , Ganghwi Kim , Myeonghwan Kang , Mi-Young Im , Younggun Park , Ki-Suk Lee

We systematically investigate possible helix states in XXZ Heisenberg model with Dzyaloshinskii-Moriya (DM) interaction. Exact solutions show that a set of precession helix states can be constructed by deliberate superposition of degenerate…

强关联电子 · 物理学 2022-12-20 E. S. Ma , K. L. Zhang , Z. Song

We study in this article a triangular lattice with Heisenberg spins interacting with each other via an antiferromagnetic exchange interaction $J$ and a Dzyaloshinskii-Moriya (DM) interaction $D$, between nearest-neighbors (NN). We consider…

统计力学 · 物理学 2023-01-11 Sahbi El Hog , Ildus F. Sharafullin , H. T. Diep , H. Garbouj , M. Debbichi , M. Said

We introduce and systematically investigate a new class of topological magnetic textures, skyrmionium meta-matter, composed of skyrmioniums (Skm, $Q=0$) and skyrmions (Sk, $Q=-1$) arranged in periodic lattices mimicking the richness of…

介观与纳米尺度物理 · 物理学 2025-11-21 Andrey O. Leonov , Kaito Nakamura

The ability to engineer the interactions in assemblies of nanoscale magnets is central to the development of artificial spin systems and spintronic technologies. Following the emergence of the Dzyaloshinskii-Moriya interaction (DMI) in thin…

介观与纳米尺度物理 · 物理学 2020-10-05 Aleš Hrabec , Zhaochu Luo , Laura J. Heyderman , Pietro Gambardella

Dzyaloshinskii-Moriya interaction (DMI) is investigated in a 2D ferromagnet (FM) with spin-orbit interaction of Rashba type at finite temperatures. The FM is described in the continuum limit by an effective $s$-$d$ model with arbitrary…

介观与纳米尺度物理 · 物理学 2019-02-20 I. A. Ado , A. Qaiumzadeh , R. A. Duine , A. Brataas , M. Titov

We study realizations of spirals and skyrmions in two-dimensional antiferromagnets with a triangular lattice on an inversion-symmetry-breaking substrate. As a possible material realization, we investigate the adsorption of transition-metal…

介观与纳米尺度物理 · 物理学 2021-05-07 Wuzhang Fang , Aldo Raeliarijaona , Po-Hao Chang , Alexey A. Kovalev , Kirill D. Belashchenko

Dzyaloshinskii-Moriya interaction (DMI) in magnetic objects is of enormous interest, because it generates a built-in chirality of magnetic domain walls (DWs) and topologically-protected skyrmions for efficient motion driven by spin-orbit…

材料科学 · 物理学 2016-08-15 Duck-Ho Kim , Sang-Cheol Yoo , Dae-Yun Kim , Byoung-Chul Min , Sug-Bong Choe

Magnetic skyrmions are intriguing topological spin textures that have attracted great attention due to their potential for future spintronic devices. Skyrmions have so far been explored in different magnetic materials, such as ferromagnets,…

The search for chiral magnetic textures in systems lacking spatial inversion symmetry has attracted a massive amount of interest in the recent years with the real space observation of novel exotic magnetic phases such as skyrmions lattices,…

材料科学 · 物理学 2015-11-06 Abderrezak Belabbes , Gustav Bihlmayer , Stefan Blügel , Aurelien Manchon

The Dzyaloshinskii-Moriya interaction (DMI) causes domain walls in perpendicular magnetized systems to adopt a homochiral configuration by winding in the same direction for both Up-Down and Down-Up walls. The topology of these domain walls…

介观与纳米尺度物理 · 物理学 2018-06-04 G. V. Karnad , E. Martinez , M. Voto , T. Schulz , B. Ocker , D. Ravelosona , M. Kläui

Topological magnetic excitations rooted in Dzyaloshinskii-Moriya interaction (DMI) are promising information carriers for next-generation memory and spintronic devices. The recently discovered two-dimensional (2D) magnets provide fertile…

材料科学 · 物理学 2021-11-23 Shunhong Zhang , Xiaoyin Li , Huisheng Zhang , Ping Cui , Xiaohong Xu , Zhenyu Zhang

In an amended version of non-Hermitian interaction picture we propose to work with the states $\psi(t)$ in a dyadic representation. The control of evolution via two conjugate Schr\"{o}diner equations then renders the usual necessity of the…

量子物理 · 物理学 2023-06-29 Miloslav Znojil

Experimental implementations of quantum computer architectures are now being investigated in many different physical settings. The full set of requirements that must be met to make quantum computing a reality in the laboratory [1] is…

量子物理 · 物理学 2009-11-06 D. P. DiVincenzo , D. Bacon , J. Kempe , G. Burkard , K. B. Whaley

The antisymmetric interlayer exchange interaction, i.e., interlayer Dzyaloshinskii-Moriya interaction (IL-DMI) has attracted significant interest since this long-range chiral spin interaction provides a new dimension for controlling spin…