Terahertz macrospin dynamics in insulating ferrimagnets
Research Area: Uncategorized Year: 2013
Type of Publication: Article  
Authors:
  • Mostafa Shalaby
  • Francois Vidal
  • Marco Peccianti
  • Roberto Morandotti
  • Florian Enderli
  • Thomas Feurer
  • Bruce D. Patterson
 
Journal: Physical Review B Volume: 88
Pages: 140301
Month: April
   
Abstract:
We investigate numerically the excitation of nonlinear magnetic interactions in a ferrite material by an energetic pump pulse of terahertz (THz) radiation. The calculations are performed by solving the coupled Maxwell and Landau-Lifshitz-Gilbert differential equations. In a time-resolved THz pump/THz probe scheme, it is demonstrated that Faraday rotation of a delayed THz probe pulse can be used to map these interactions. Our study is motivated by the ability of soft x-ray free electron lasers to perform time-resolved imaging of the magnetization process at the submicrometer and subpicosecond length and time scales.
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