Ultrafast transient dynamics in composite multiferroics

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.

13 pages, 4 figures

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Cited by in corpus (3)

• Positive-Negative Birefringence in Multiferroic Layered Metasurfaces
• Laser-induced magnetization precession in individual magnetoelastic domains of a multiferroic CoFeB/BaTiO${}_3$ composite
• Thermoelastic enhancement of the magnonic spin Seebeck effect in thin films and bulk samples