Splitting of spin excitations in nanometric rings induced by a magnetic field.

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "applied magnetic field",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Eigenmode spectrum of nanometric permalloy rings",
    "Splitting of radial and azimuthal spin excitations (magnon modes)",
    "Mode localization and symmetry effects",
    "Eigenvectors and eigenvalues in vortex and saturated states (dynamical matrix calculations)"
  ],
  "main_findings": "Brillouin light scattering measurements showed magnetic-field-induced splitting effects in the eigenmode spectrum of nanometric permalloy rings, affecting radial and azimuthal excitations. The observed splitting was explained in terms of mode localization or symmetry, and dynamical matrix calculations were used to compute eigenvectors and eigenvalues in vortex and saturated states.",
  "effect_direction": "unclear",
  "limitations": [],
  "evidence_strength": "insufficient",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "Brillouin light scattering",
    "permalloy rings",
    "nanometric rings",
    "spin excitations",
    "eigenmodes",
    "magnetic field",
    "mode splitting",
    "mode localization",
    "symmetry",
    "dynamical matrix",
    "vortex state",
    "saturated state"
  ],
  "suggested_hubs": []
}