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Metastable states with surprising properties abound in Hilbert space. We study unfrustrated isotropic spin-\half Heisenberg models in honeycomb lattice and find emergence of \textit{metastable Kitaev spin liquids having a 2-spin nematic…

Strongly Correlated Electrons · Physics 2023-09-14 Ganapathy Baskaran

Monoaxial chiral magnets can form a peculiar noncollinear spin structure called the chiral soliton lattice in an applied magnetic field perpendicular to the helical axis. We study magnetic properties and electrical transport in the chiral…

Strongly Correlated Electrons · Physics 2017-07-12 Shun Okumura , Yasuyuki Kato , Yukitoshi Motome

Skyrmions and antiskyrmions are nanoscale swirling textures of magnetic moments formed by chiral interactions between atomic spins in magnetic non-centrosymmetric materials and multilayer films with broken inversion symmetry. These…

Magnetic structures and their stability of the multiple helical spin density waves (MHSDW) and related magnetic skyrmions in itinerant electron system have been investigated on the basis of both the phenomenological and microscopic…

Strongly Correlated Electrons · Physics 2018-09-26 Yoshiro Kakehashi , Daiki Koja , Todgerel Olonbayar , Hideyori Miyagi

The internal and lattice structures of magnetic skyrmions in B20-type FeGe are investigated using off-axis electron holography. The temperature, magnetic field and angular dependence of the magnetic moments of individual skyrmions are…

Mesoscale and Nanoscale Physics · Physics 2017-03-01 K. Shibata , A. Kovács , N. Kanazawa , R. E. Dunin-Borkowski , Y. Tokura

Topological spin textures in frustrated intermetallics hold great promise for spintronics applications. However, understanding their origin and properties remains a significant challenge due to competing and often long-range interactions…

Iron telluride FeTe is known to display bicollinear magnetic order at low temperatures together with a monoclinic lattice distortion. Because the bicollinear order can involve two different wavevectors $(\pi/2,\pi/2)$ and $(\pi/2,-\pi/2)$,…

Strongly Correlated Electrons · Physics 2017-07-26 C. B. Bishop , J. Herbrych , E. Dagotto , A. Moreo

We study solitons in a zig-zag lattice of magnetic dipoles. The lattice comprises two sublattices of parallel chains with magnetic dipoles at their vertices. Due to orthogonal easy planes of rotation for dipoles belonging to different…

Materials Science · Physics 2023-02-28 Paula Mellado , Ignacio Tapia

Thin ferromagnetic films can possess unconventional magnetic properties, opening a new road for using them in spintronic technologies. In the present work exploiting three different methods, we comprehensively analyze phason excitations of…

Strongly Correlated Electrons · Physics 2022-10-05 X. -G. Wang , L. Chotorlishvili , G. Tatara , A. Dyrdał , Guang-hua Guo , V. K. Dugaev , J. Barnaś , S. S. P. Parkin , A. Ernst

Two-dimensional (2D) van der Waals (vdW) magnetic materials have recently been introduced as a new horizon in materials science and enable the potential applications for next-generation spintronic devices. Here, in this communication, the…

Materials Science · Physics 2020-05-12 Bei Ding , Zefang Li , Guizhou Xu , Hang Li , Zhipeng Hou , Enke Liu , Xuekui Xi , Feng Xu , Yuan Yao , Wenhong Wang

Stable ring vortex solitons, featuring a bright-shape, appear to be very rare in nature. However, here we show that they exist and can be made dynamically stable in defocusing cubic nonlinear media with an imprinted Bessel optical lattice.…

Optics · Physics 2009-11-10 Yaroslav V. Kartashov , Victor A. Vysloukh , Lluis Torner

We study analytically M-spin-flip stable states in disordered short-ranged Ising models (spin glasses and ferromagnets) in all dimensions and for all M. Our approach is primarily dynamical and is based on the convergence of a…

Disordered Systems and Neural Networks · Physics 2009-10-31 C. M. Newman , D. L. Stein

We demonstrate that the magnetic nanoskyrmion lattice on the Fe monolayer on Ir(111) and the positions of the Fe atoms can be resolved simultaneously using magnetic exchange force microscopy. Thus, the relation between magnetic and atomic…

Materials Science · Physics 2017-08-18 Josef Grenz , Arne Köhler , Alexander Schwarz , Roland Wiesendanger

We report on the experimental realization of a state-dependent lattice for a two-orbital fermionic quantum gas with strong interorbital spin exchange. In our state-dependent lattice, the ground and metastable excited electronic states of…

We study magnetoelastic resonance phenomena in a mono-axial chiral helimagnet belonging to hexagonal crystal class. By computing the spectrum of coupled elastic wave and spin wave, it is demonstrated how hybridization occurs depending on…

Materials Science · Physics 2018-05-16 A. A. Tereshchenko , A. S. Ovchinnikov , I. Proskurin , E. V. Sinitsyn , Jun-ichiro Kishine

The formation of topological spin textures at the nanoscale has a significant impact on the long-range order and dynamical response of magnetic materials. We study the relaxation mechanisms at the conical-to-helical phase transition in the…

Materials Science · Physics 2021-05-04 P. Schoenherr , M. Stepanova , E. N. Lysne , N. Kanazawa , Y. Tokura , A. Bergman , D. Meier

We examine micromagnetic pattern formation in chiral magnets, driven by the competition of Heisenberg exchange, Dzyaloshinskii-Moriya interaction, easy-plane anisotropy and thermodynamic Landau potentials. Based on equivariant bifurcation…

Mathematical Physics · Physics 2020-10-28 Xinye Li , Christof Melcher

Emergent phenomena and functions arising from topological electron-spin textures in real space or momentum space are attracting growing interest for new concept of states of matter as well as for possible applications to spintronics. One…

Topological particle-like excitations such as skyrmions and hopfions offer rich opportunities for spintronic and photonic applications. While skyrmions have been extensively studied, the stabilization mechanisms and phase behavior of…

Mesoscale and Nanoscale Physics · Physics 2025-12-01 Andrey O. Leonov , Takayuki Shigenaga

We have utilised a high spatial resolution imaging method, Differential Phase Contrast (DPC) performed in a scanning transmission electron microscope (STEM), for precise measurement of the magnetic induction distribution in skyrmion states…

Mesoscale and Nanoscale Physics · Physics 2016-11-03 D. McGrouther , R. J. Lamb , M. Krajnak , S. McFadzean , S. McVitie , R. L. Stamps , A. O. Leonov , A. N. Bogdanov , Y. Togawa