Inertial spin waves in ferromagnets and antiferromagnets

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2022
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Physical Review B. American Physical Society (APS). 2022, 106(13), 134422. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.106.134422
Zusammenfassung

Inertial effects in spin dynamics are theoretically predicted to emerge at ultrashort time scales, but their experimental signatures are often ambiguous. Here we calculate the spin-wave spectrum in ferromagnets and two-sublattice antiferromagnets in the presence of inertial effects. It is shown how precession and nutation spin waves hybridize with each other, leading to the renormalization of the frequencies, the group velocities, the effective gyromagnetic ratios, and the effective damping parameters. Possible ways of distinguishing between the signatures of inertial dynamics and similar effects explainable within conventional models are discussed.

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ISO 690MONDAL, Ritwik, Levente RÓZSA, 2022. Inertial spin waves in ferromagnets and antiferromagnets. In: Physical Review B. American Physical Society (APS). 2022, 106(13), 134422. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.106.134422
BibTex
@article{Mondal2022Inert-59455,
  year={2022},
  doi={10.1103/PhysRevB.106.134422},
  title={Inertial spin waves in ferromagnets and antiferromagnets},
  number={13},
  volume={106},
  issn={2469-9950},
  journal={Physical Review B},
  author={Mondal, Ritwik and Rózsa, Levente},
  note={Article Number: 134422}
}
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