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The kagome lattice antiferromagnets Mn$_3$X(= Sn, Ge) have a noncollinear 120$^\circ$ ordered ground state, which engenders a strong anomalous Hall response. It has been shown that this response is linked to the magnetic order and can be…

Mesoscale and Nanoscale Physics · Physics 2022-11-16 Sayak Dasgupta , Oleg A. Tretiakov

Strain applied to a condensed-matter system can be used to engineer its excitation spectrum via artificial gauge fields, or it may tune the system through transitions between different phases. Here we demonstrate that strain tuning of the…

Strongly Correlated Electrons · Physics 2022-03-28 Mary Madelynn Nayga , Matthias Vojta

Non-collinear antiferromagnets (NCAFMs) are appealing for antiferromagnetic spintronics, as they combine the advantages of collinear antiferromagnets with novel emergent phenomena stemming from their complex spin structures. These phenomena…

Materials Science · Physics 2026-01-23 Feodor Svetlanov Konomaev , Mithuss Tharmalingam , Kjetil M. D. Hals

The ac spin pumping of noncollinear antiferromagnets is theoretically investigated. Starting from an effective action description of the spin system, we derive the Onsager coefficients connecting the spin pumping and spin-transfer torque…

Mesoscale and Nanoscale Physics · Physics 2021-11-23 Mike A. Lund , Akshaykumar Salimath , Kjetil M. D. Hals

Using a pure electric current to control kagome noncollinear antiferromagnets is promising in information storage and processing, but a full description is still lacking, in particular, on intrinsic (i.e., no external magnetic fields or…

Mesoscale and Nanoscale Physics · Physics 2024-04-01 Yiyuan Chen , Z. Z. Du , Hai-Zhou Lu , X. C. Xie

The ability to control magnetism with strain offers innovative pathways for the modulation of magnetic domain configurations and for the manipulation of magnetic states in materials on the nanoscale. Although the effect of strain on…

We predict a mechanism to controllably manipulate domain walls in kagome antiferromagnets via a single linearly polarized spin-wave source. We show by means of atomistic spin dynamics simulations of antiferromagnets with kagome structure…

Mesoscale and Nanoscale Physics · Physics 2021-10-14 Davi R. Rodrigues , Akshaykumar Salimath , Karin Everschor-Sitte , Kjetil M. D. Hals

We demonstrate how shape-induced strain can be used to control antiferromagnetic order in NiO/Pt thin films. For rectangular elements patterned along the easy and hard magnetocrystalline anisotropy axes of our film, we observe different…

It is shown that site disorder induces noncoplanar states, competing with the thermal selection of coplanar states, in the nearest neighbor, classical kagome Heisenberg antiferromagnet (AFM). For weak disorder, it is found that the ground…

Condensed Matter · Physics 2009-10-22 E. F. Shender , V. B. Cherepanov , P. C. W. Holdsworth , A. J. Berlinsky

Metallic kagome systems have attracted considerable interest in recent years, as they provide a rich platform for studying phenomena associated with their distinctive band structure. The coexistence of bands with Dirac points similar to…

Strongly Correlated Electrons · Physics 2025-12-22 Patricia A Almeida , George B Martins , Sergio Ulloa

We study the physics of the strong-coupling Hubbard model in a kagome lattice ribbon under mechanical tension and half-filling. It is known that in the absence of strain, the lattice symmetry of the system and strong electronic interactions…

Strongly Correlated Electrons · Physics 2024-10-31 R. F. P. Costa , E. Vernek , S. E. Ulloa

Nematic order in the iron-based superconductors is closely tied to a lattice distortion and a structural transition from tetragonal to orthorhombic symmetry. External stress of the appropriate symmetry acts as a conjugate field of the…

Strongly Correlated Electrons · Physics 2019-08-07 Roland Willa , Max Fritz , Jörg Schmalian

Non-collinear antiferromagnets (nAFMs) with a small net magnetic moment offer new opportunities for ultrafast spintronic devices, owing to unique physical properties. While in ferromagnets and collinear AFMs the spin current polarization is…

Mesoscale and Nanoscale Physics · Physics 2025-03-18 Ping Tang , Gerrit E. W. Bauer

We report magnetization and neutron scattering measurements down to 60 mK on a new family of Fe based kagome antiferromagnets, in which a strong local spin anisotropy combined with a low exchange path network connectivity lead to domain…

Strongly Correlated Electrons · Physics 2012-01-04 E. Lhotel , V. Simonet , J. Ortloff , B. Canals , C. Paulsen , E. Suard , T. Hansen , D. J. Price , P. T. Wood , A. K. Powell , R. Ballou

We propose a setup which allows to couple the electron spin degree of freedom to the mechanical motions of a nanomechanical system not involving any of the ferromagnetic components. The proposed method employs the strain induced spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. G. Mal'shukov , C. S. Tang , C. S. Chu , K. A. Chao

The kagome lattice antiferromagnet Mn$_3$Ge has a local hexagonal symmetry with a 120$^\circ$ ordered ground state. This non-colinear ground state engenders a strong anomalous Hall response. The main goal of this work is to understand the…

Mesoscale and Nanoscale Physics · Physics 2022-08-26 Sayak Dasgupta

Topological chiral antiferromagnets, such as Mn$_{3}$Sn, are emerging as promising materials for next-generation spintronic devices due to their intrinsic transport properties linked to exotic magnetic configurations. Here, we demonstrate…

We demonstrate that an antiferromagnet can be employed for a highly efficient electrical manipulation of a ferromagnet. In our study we use an electrical detection technique of the ferromagnetic resonance driven by an in-plane ac-current in…

Mesoscale and Nanoscale Physics · Physics 2015-12-08 V. Tshitoyan , C. Ciccarelli , A. P. Mihai , M. Ali , A. C. Irvine , T. A. Moore , T. Jungwirth , A. J. Ferguson

Whenever the elastic energy of a solid depends on magnetic field, there is a magnetostrictive response. Field-linear magnetostriction implies piezomagnetism and vice versa. Here, we show that Mn$_3$Sn, a non-collinear antiferromanget with…

Strongly Correlated Electrons · Physics 2024-08-27 Qingkai Meng , Jianting Dong , Pan Nie , Liangcai Xu , Jinhua Wang , Shan Jiang , Huakun Zuo , Jia Zhang , Xiaokang Li , Zengwei Zhu , Leon Balents , Kamran Behnia

We explore the relationship among the magnetic ordering in real space, the resulting spin texture on the Fermi surface, and the related superconducting gap structure in non-collinear antiferromagnetic metals without spin-orbit coupling. Via…

Superconductivity · Physics 2023-09-01 Seung Hun Lee , Bohm-Jung Yang
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