A New Ultrafast Control Scheme of Ferromagnet for Energy-Efficient Data Storage (IMAGE)

Tohoku University

A New Ultrafast Control Scheme of Ferromagnet for Energy-Efficient Data Storage

Caption

A schematic illustration of the demonstrated ultrafast and energy efficient switching of ferromagnet driven by a single femtosecond laser pulse. The laser pulse demagnetizes the ferrimagnetic layer and generates a spin current, which travels through the nonmagnet and finally induces the switching of the ferromagnet. The lower image shows an observed magneto-optical Kerr effect micrograph showing the switching of the ferromagnetic layer.

Credit

Shunsuke Fukami and Stéphane Mangin

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Shunsuke Fukami and Stéphane Mangin

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