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Ultrafast Interaction of the Angular Momentum of Photons with Spins in the Metallic Amorphous Alloy GdFeCo

Domenii publicaţii > Fizica + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: C. D. Stanciu, F. Hansteen, A. V. Kimel, A. Tsukamoto , A. Itoh , A. Kirilyuk , and Th. Rasing

Editorial: Physical Review Letters, 98, p.207401, 2007.

Rezumat:

Ultrashort laser pulses have been used to study the effect of circularly polarized light on spins in the ferrimagnetic metal GdFeCo. By turning the sample into a multidomain state and thereby suppressing the observation of the heating effect of light, we have been able to demonstrate an ultrafast nonthermal excitation of spin waves with a phase that depends on the angular momentum of the photons. These results demonstrate the possibility of ultrafast coherent control of the magnetization in this metallic system.

Cuvinte cheie: magnetism // magnetization dynamics

URL: http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000098000020207401000001&idtype=cvips&gifs=yes