magnon (rus. магнон) — quasiparticle, corresponding to a quantum of a spin wave in magnetically ordered media.

Description

Magnon plays the same role with respect to spin fluctuations as phonon with respect to crystal lattice vibrations. The magnon lifetime is determined by the spin wave attenuation. Magnons largely determine thermodynamic, kinetic, optical and other properties of ferro- and antiferromagnetics.

Crystals with multiple magnetic sublattices (e.g. antiferromagnetics) may contain several varieties of magnons with different energy spectra.

Author

  • Naymushina Daria A.

Sources

  1. Magnon // The Great Soviet Encyclopedia (in Russian), 3rd. Edition. - Moscow: Bol'shaja Rossijjskaja ehnciklopedija, 1969–1978.
  2. Physical Encyclopedic Dictionary (in Russian). — Moscow: Bol'shaja Rossijjskaja ehnciklopedija, 1995. — 928 pp.

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