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  • Letter

Chirality of magnetic excitations in ferromagnetic SrRuO3

K. Jenni1, S. Kunkemöller1, W. Schmidt2, P. Steffens3, A. A. Nugroho4, and M. Braden1,*

  • 1II. Physikalisches Institut, Universität zu Köln, Zülpicher Str. 77, D-50937 Köln, Germany
  • 2Forschungszentrum Jülich GmbH, Jülich Centre for Neutron Science at ILL, 38042 Grenoble, France
  • 3Institut Laue Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
  • 4Faculty of Mathematics and Natural Science, Institut Teknologi Bandung, Jalan Ganesha 10, 40132 Bandung, Indonesia

  • *braden@ph2.uni-koeln.de
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Phys. Rev. B 105, L180408 – Published 16 May, 2022

DOI: https://doi.org/10.1103/PhysRevB.105.L180408

Abstract

Ferromagnetic SrRuO3 was proposed as a candidate material to exhibit an inverted magnon chirality due to a strong impact of spin-orbit coupling and Weyl fermions. By polarized inelastic neutron scattering under magnetic fields we determine the chirality of the ferromagnetic zone-center excitation as a function of temperature. Well in the ferromagnetic phase the excitation is perfectly chiral with the usual (right-handed) sign and only when the spontaneous magnetization is almost completely suppressed the chirality of the zone center magnetic excitations is reduced but does not change sign.

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Phys. Rev. B 105, L180408– Published 16 May, 2022
  • Received 27 January 2022
  • Revised 23 March 2022
  • Accepted 30 March 2022
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