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Proceedings Paper

Ultrafast spin dynamics in metallic layers and strongly correlated oxides
Author(s): Ettore Carpene; Fabio Boschini; Hamoon Hedayat; Claudia Dallera; Ezio Puppin
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Paper Abstract

The spin dynamics triggered by an ultrashort optical excitation can lead to a variety of behaviors depending on the specific spin and electronic structure of the material. In metallic films, electron-quasiparticles (phonons and magnons) interactions takes place on sub-picosecond timescale and demagnetization is established within 100 fs. In half-metal oxides, spin dynamics is much slower (100 ps) due to the inhibition of spin-flip processes. Furthermore, the dynamics of magnetic anisotropies can be exploited to control the magnetization in ferromagnets. Optically-induced reversible switching of the magnetization has been recently demonstrated in thin magnetic layers on the 100 picoseconds timescale.

Paper Details

Date Published: 28 August 2014
PDF: 7 pages
Proc. SPIE 9167, Spintronics VII, 91672D (28 August 2014); doi: 10.1117/12.2061653
Show Author Affiliations
Ettore Carpene, Politecnico di Milano (Italy)
Fabio Boschini, Politecnico di Milano (Italy)
Hamoon Hedayat, Politecnico di Milano (Italy)
Claudia Dallera, Politecnico di Milano (Italy)
Ezio Puppin, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 9167:
Spintronics VII
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi, Editor(s)

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