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Analysis in k-Space of Magnetization Dynamics Driven by Strong Terahertz Fields

Scalera, V. ; Hudl, M. ; Neeraj, K. ; Perna, S. ; d'Aquino, M. ; Bonetti, S. ; Serpico, C.

IEEE transactions on magnetics, 2021-02, Vol.57 (2), p.1-5

New York: IEEE

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Título:
Analysis in k-Space of Magnetization Dynamics Driven by Strong Terahertz Fields
Autor: Scalera, V. ; Hudl, M. ; Neeraj, K. ; Perna, S. ; d'Aquino, M. ; Bonetti, S. ; Serpico, C.
Assuntos: Demagnetization ; Dispersion ; Dynamics ; Magnetic domains ; Magnetism ; Magnetization ; Magnetomechanical effects ; Magnetostatic waves ; Magnons ; Saturation magnetization ; Spin dynamics ; spin waves analysis ; Thin films ; ultrafast magnetization dynamics
É parte de: IEEE transactions on magnetics, 2021-02, Vol.57 (2), p.1-5
Descrição: Demagnetization in a thin film due to a terahertz pulse of magnetic field is investigated. Linearized Landau-Lifshitz-Gilbert (LLG) equation in the Fourier space to describe the magnetization dynamics is derived, and spin wave time evolution is studied. Finally, the demagnetization due to spin wave dynamics and recent experimental observations on similar magnetic system is compared. As a result, the marginal role of spin wave dynamics in loss of magnetization is established.
Editor: New York: IEEE
Idioma: Inglês

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