Laser-induced ultrafast spin current pulses
A thermodynamic approach
Andreas Fognini (Kavli institute of nanoscience Delft, TU Delft - QN/Zwiller Lab)
T. U. Michlmayr (ETH Zürich)
Andreas Vaterlaus (ETH Zürich)
Yves Acremann (ETH Zürich)
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Abstract
The ultrafast demagnetization process allows for the generation of femtosecond spin current pulses. Here, we present a thermodynamic model of the spin current generation process, based on the chemical potential gradients as the driving force for the spin current. We demonstrate that the laser-induced spin current can be estimated by an easy to understand diffusion model.
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