Spin waves in the collinear antiferromagnetic phase of Mn5Si3

F. J. dos Santos, N. Biniskos, S. Raymond, K. Schmalzl, M. dos Santos Dias, P. Steffens, J. Persson, S. Blügel, S. Lounis, and T. Brückel
Phys. Rev. B 103, 024407 – Published 7 January 2021
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  • INTRODUCTION
  • EXPERIMENTAL PART
  • THEORETICAL CALCULATIONS
  • COMPARING EXPERIMENTAL AND THEORETICAL…
  • CONCLUSIONS
  • ACKNOWLEDGMENTS
    • References

    Abstract

    By combining two independent approaches, inelastic neutron-scattering measurements and density-functional-theory calculations, we study the spin waves in the collinear antiferromagnetic phase (AFM2) of Mn5Si3. 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 Mn5Si3. 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.

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    • Received 9 November 2020
    • Accepted 17 December 2020

    DOI:https://doi.org/10.1103/PhysRevB.103.024407

    ©2021 American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    AntiferromagnetismMagnonsSpin wavesSpintronics
    1. Physical Systems
    Antiferromagnets
    1. Techniques
    Density functional theoryHeisenberg modelHolstein-Primakoff methodInelastic neutron scattering
    Condensed Matter, Materials & Applied PhysicsAccelerators & Beams

    Authors & Affiliations

    F. J. dos Santos1,2,*, N. Biniskos3,†, S. Raymond4, K. Schmalzl5, M. dos Santos Dias1, P. Steffens6, J. Persson7, S. Blügel1, S. Lounis1,8, and T. Brückel7

    • 1Peter Grünberg Institut and Institute for Advanced Simulations, Forschungszentrum Jülich and JARA, D-52425 Jülich, Germany
    • 2Department of Physics, RWTH Aachen University, D-52056 Aachen, Germany
    • 3Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at MLZ, Lichtenbergstraße 1, D-85748 Garching, Germany
    • 4Université Grenoble Alpes, CEA, IRIG, MEM, F-38000 Grenoble, France
    • 5Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at ILL, 71 avenue des Martyrs, F-38000 Grenoble, France
    • 6Institut Laue-Langevin, 71 avenue des Martyrs, F-38000 Grenoble, France
    • 7Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institut (PGI-4), JARA-FIT, D-52425 Jülich, Germany
    • 8Faculty of Physics, University of Duisburg-Essen, D-47053 Duisburg, Germany

    • *f.dos.santos@fz-juelich.de (present address: EPFL, Route Cantonale, CH-1015 Lausanne, Switzerland; flaviano.dossantos@ epfl.ch)
    • †n.biniskos@fz-juelich.de

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    Vol. 103, Iss. 2 — 1 January 2021

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