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arXiv · 1508.02921

Simultaneous electronic and the magnetic excitation of a ferromagnet by intense THz pulses

Mostafa Shalaby·Carlo Vicario·Christoph P. Hauri
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Abstract

The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynamics in Cobalt thin film on the sub-picosecond time scale. Here, we show that at higher field intensities, the THz electric field starts playing a role, strongly changing the dielectric properties of the cobalt thin film. Both the electronic and magnetic responses are found to occur simultaneously, with the electric field response persistent on a time scale orders of magnitude longer than the THz stimulus

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Mostafa Shalaby, Carlo Vicario, Christoph P. Hauri. 2015-08-12. Simultaneous electronic and the magnetic excitation of a ferromagnet by intense THz pulses. https://doi.org/10.1088/1367-2630%2F18%2F1%2F013019

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