Abstract
According to the fundamental equations of the relativistic quantum electrodynamics (QED) describing the light matter interaction, a femtosecond laser pulse can instantaneously modify the spin dynamics in a ferromagnetic material. It is this physical phenomenon that precedes the laser induced demagnetization occuring at the femtosecond time scale, that we have investigated using femtosecond optical pulses [1].
© 2009 IEEE
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