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Topological magnon insulators in insulating Kagom\'e ferromagnets have been extensively studied in a series of papers. It has been established that Dzyaloshinskii-Moriya interaction (DMI) is the key ingredient to observe a nontrivial…

Strongly Correlated Electrons · Physics 2016-11-22 S. A. Owerre

Itinerant electrons in a two-dimensional Kagome lattice form a Dirac semi-metal, similar to graphene. When lattice and spin symmetries are broken by various periodic perturbations this semi-metal is shown to spawn interesting non-magnetic…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 H. -M. Guo , M. Franz

Topological magnons emerge as topologically protected spin wave states at the edges of magnets. Here, we theoretically explore how these surface states can be harnessed to amplify the spin Seebeck effect (SSE) in antiferromagnets (AFMs)…

Mesoscale and Nanoscale Physics · Physics 2025-01-16 Feodor Svetlanov Konomaev , Kjetil M. D. Hals

The control of topological quantum materials is the prerequisite for novel devices exploiting these materials. Here we propose that the room temperature ferromagnet Fe3Sn2, whose fundamental building blocks are Kagome bilayers of iron,…

Strongly Correlated Electrons · Physics 2018-10-04 M. Yao , H. Lee , N. Xu , Y. Wang , J. Ma , O. V. Yazyev , Y. Xiong , M. Shi , G. Aeppli , Y. Soh

Special arrangements of atoms with more than one atom per unit cell, including honeycomb or kagome (woven bamboo mat) lattices, can host propagating excitations with non-trivial topology as defined by their evolution along closed paths in…

Magnetic skyrmions are topologically stabilized quasi-particles and are promising candidates for energy-efficient applications, such as storage but also logic and sensing. Here we present a new concept for a multi-turn sensor-counter device…

Mesoscale and Nanoscale Physics · Physics 2024-05-14 Kilian Leutner , Thomas Brian Winkler , Johannes Güttinger , Hans Fangohr , Mathias Kläui

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

Topological magnon insulators are a new class of magnetic materials that possess topologically nontrivial magnon bands. As a result, magnons in these materials display properties analogous to those of electrons in topological insulators.…

Strongly Correlated Electrons · Physics 2016-06-22 R. Chisnell , J. S. Helton , D. E. Freedman , D. K. Singh , F. Demmel , C. Stock , D. G. Nocera , Y. S. Lee

Excitations of ordered insulating magnets gain renewed interest due to their potential topological properties and the natural realization of magnetic analogues of the celebrated topological models. In this paper we go beyond these parallels…

Strongly Correlated Electrons · Physics 2019-01-16 Judit Romhányi

Having multi-output logic gates saves much energy because the same structure can be used to feed multiple inputs of next stage gates simultaneously. This paper proposes novel triangle shape fanout of 2 spin wave Majority and XOR gates; the…

Mesoscale and Nanoscale Physics · Physics 2021-09-27 Abdulqader Mahmoud , Frederic Vanderveken , Florin Ciubotaru , Christoph Adelmann , Sorin Cotofana , Said Hamdioui

The design of a microstructured, fully functional spin-wave majority gate is presented and studied using micromagnetic simulations. This all-magnon logic gate consists of three-input waveguides, a spin-wave combiner and an output waveguide.…

We theoretically study the emergence of topological magnons in electron-magnon coupled systems. The magnon dispersion in a ferromagnet usually possesses an effective time reversal symmetry in the absence of Dzyaloshinskii-Moriya (DM)…

Strongly Correlated Electrons · Physics 2026-02-02 Kosuke Fujiwara , Takahiro Morimoto

We introduce a two dimensional network of corner-sharing triangles with square lattice symmetry. Properties of magnetic systems here should be similar to those on the kagome lattice. Focusing on the spin half Heisenberg quantum…

Statistical Mechanics · Physics 2009-11-07 Rahul Siddharthan , Antoine Georges

Kagome metals are as an exciting playground for the explorations of novel phenomena at the intersection of topology, electron correlations and magnetism. The family of FeSn-based kagome magnets in particular attracted a lot of attention for…

Materials Science · Physics 2022-08-26 Hong Li , He Zhao , Qiangwei Yin , Qi Wang , Zheng Ren , Shrinkhala Sharma , Hechang Lei , Ziqiang Wang , Ilija Zeljkovic

In neutron interferometric experiments using polarized neutrons coherent spin-rotation control is required. In this letter we present a new method for Larmor spin-rotation around an axis parallel to the outer guide field using topology…

The successful realization of skyrmion-based spintronic devices depends on the easy manipulation of underlying magnetic interactions in the skyrmion-hosting materials. Although the mechanism of skyrmion formation in non-centrosymmetric…

Materials Science · Physics 2022-07-28 Dola Chakrabartty , Sk Jamaluddin , Subhendu K. Manna , Ajaya K. Nayak

Magnetic skyrmions are topological solitons with a nanoscale winding spin texture that hold promise for spintronics applications. Until now, skyrmions have been observed in a variety of magnets that exhibit nearly parallel alignment for the…

Antiferromagnetic Kagome semimetals have attracted tremendous attentions for their potential application in antiferromagnetic topological spintronics. Effectively manipulating Kagome antiferromagnetic states could reveal abundant physical…

Kagome magnets provide a fascinating platform for the realization of correlated topological quantum phases under various magnetic ground states. However, the effect of the magnetic spin configurations on the characteristic electronic…

Spin waves are excitations in ferromagnetic media that have been proposed as information carriers in hybrid spintronic devices with much lower operation power than conventional charge-based electronics. Their wave nature can be exploited in…