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arXiv · 1601.00391

Ultrafast transient dynamics in composite multiferroics

Chenglong Jia·Ning Zhang·Alexander Sukhov·Jamal Berakdar
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Abstract

We investigate theoretically the dynamic multiferroic response of coupled ferroelectric/ferromagnetic composites upon excitation by a photo-induced acoustic strain pulse. Two magnetoelectric mechanisms are considered: interface strain- and charge-mediated magnetoelectric couplings. The former results in demagnetization, depolarization and repolarization within tens of picoseconds via respectively magnetostriction and piezoelectricity. Charge magnetoelectric interaction affects the ferroelectric/ferromagnetic feedback response leading to magnetization recovery. Experimental realization based on time-resolved x-ray diffraction is suggested. The findings indicate the potential of composite multiferroics for photo-steered, high-speed, multi-state electronic devices.

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Chenglong Jia, Ning Zhang, Alexander Sukhov, Jamal Berakdar. 2016-01-04. Ultrafast transient dynamics in composite multiferroics. https://doi.org/10.1088/1367-2630%2F18%2F2%2F023002

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