Linear and nonlinear spin dynamics in multi-domain magnetoelastic antiferromagnets

Gomonay, Olena; Bossini, Davide

Linear and nonlinear spin dynamics in multi-domain magnetoelastic antiferromagnets

Dateien

Gomonay_2-l499vzj24q520.pdfGröße: 1.26 MBDownloads: 148

Datum

2021

Autor:innen

Gomonay, Olena

Bossini, Davide

Open Access-Veröffentlichung

Open Access Hybrid

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Physics D: Applied Physics. Institute of Physics Publishing (IOP). 2021, 54(37), 374004. ISSN 0022-3727. eISSN 1361-6463. Available under: doi: 10.1088/1361-6463/ac055c

Zusammenfassung

Antiferromagnets have recently surged as the prominent material platform for the next generation spintronics devices. Despite the remarkable abundance of antiferromagnets and the variety of their spin textures in nature, they share a widely common, if not ubiquitous, feature. Magnetoelasticity, which is expressed as strictions of different origin, relativistic and/or exchange, significantly contributes to the magnetic anisotropy of antiferromagnets. Crucially, a general theoretical framework able to address the role of domain walls on the spin dynamics in antiferromagnets in the presence of magnetoelasticity is lacking. Here we tackle this problem developing a very general macroscopic phenomenological model. We demonstrate that the magnetoelasticity defines both the equilibrium and dynamical magnetic properties of easy-plane antiferromagnets in linear and nonlinear regimes. We employ our model to reproduce experimental results, showing that domain walls majorly affect the optically driven ultrafast nonlinear spin dynamics. Our model can be applied to a wide group of materials and, if properly extended, can be utilised to describe also other physical scenarios, key in the establishment of concepts for antiferromagnetic spintronics.

Fachgebiet (DDC)

530 Physik

Schlagwörter

theory, antiferromagnets, spin dynamics, nonlinear phenomena

Zitieren

ISO 690

GOMONAY, Olena, Davide BOSSINI, 2021. Linear and nonlinear spin dynamics in multi-domain magnetoelastic antiferromagnets. In: Journal of Physics D: Applied Physics. Institute of Physics Publishing (IOP). 2021, 54(37), 374004. ISSN 0022-3727. eISSN 1361-6463. Available under: doi: 10.1088/1361-6463/ac055c

BibTex

@article{Gomonay2021Linea-54382,
  year={2021},
  doi={10.1088/1361-6463/ac055c},
  title={Linear and nonlinear spin dynamics in multi-domain magnetoelastic antiferromagnets},
  number={37},
  volume={54},
  issn={0022-3727},
  journal={Journal of Physics D: Applied Physics},
  author={Gomonay, Olena and Bossini, Davide},
  note={Article Number: 374004}
}

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