All-optical magnetization switching in spin-valve structure mediated by spin-polarized hot electron transport

Orateur : Stéphane MANGIN (Institut Jean Lamour, Univ. de Lorraine, Nancy)

All-optical switching (AOS) without any magnetic field has a great potential for the future ultrafast and energ y efficient magnetic memories. It was firstly demonstrated that the magnetization of a GdFeCo ferrimagnetic film can be Figure 1 Schematic illustration of AOS in GdFeCo / Cu / [Co/Pt] spin valve structure. switched by a single femtosecond (fs) laser pulse [1,2]. AOS in a wide variety of materials was demonstrated recently [3,4,5], however the switching was found to be induced by multiple laser pulses.

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