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Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:2011.05455 (cond-mat)
[Submitted on 10 Nov 2020 (v1), last revised 9 Dec 2020 (this version, v3)]

Title:Spin-waves in the collinear antiferromagnetic phase of Mn$_\bf{5}$Si$_\bf{3}$

Authors:F. J. dos Santos, N. Biniskos, S. Raymond, K. Schmalzl, M. dos Santos Dias, P. Steffens, J. Persson, S. Blügel, S. Lounis, T. Brückel
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Abstract:By combining two independent approaches, inelastic neutron scattering measurements and density functional theory calculations, we study the spin-waves in the high-temperature collinear antiferromagnetic phase (AFM2) of Mn$_5$Si$_3$. We obtain its magnetic ground-state properties and electronic structure. This study allowed us to determine the dominant magnetic exchange interactions and magnetocrystalline anisotropy in the AFM2 phase of Mn$_5$Si$_3$. Moreover, the evolution of the spin excitation spectrum is investigated under the influence of an external magnetic field perpendicular to the anisotropy easy-axis. The low energy magnon modes show a different magnetic field dependence which is a direct consequence of their different precessional nature. Finally, possible effects related to the Dzyaloshinskii-Moriya interaction are also considered.
Comments: 10 pages, 8 figures
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Materials Science (cond-mat.mtrl-sci)
Cite as: arXiv:2011.05455 [cond-mat.mes-hall]
  (or arXiv:2011.05455v3 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.2011.05455
Journal reference: Phys. Rev. B 103, 024407 (2021)
Related DOI: https://doi.org/10.1103/PhysRevB.103.024407

Submission history

From: Flaviano José dos Santos [view email]
[v1] Tue, 10 Nov 2020 23:18:01 UTC (2,836 KB)
[v2] Thu, 12 Nov 2020 19:53:49 UTC (2,836 KB)
[v3] Wed, 9 Dec 2020 17:33:02 UTC (2,836 KB)
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