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.
Cite
@article{arxiv.1601.00391,
title = {Ultrafast transient dynamics in composite multiferroics},
author = {Chenglong Jia and Ning Zhang and Alexander Sukhov and Jamal Berakdar},
journal= {arXiv preprint arXiv:1601.00391},
year = {2016}
}
Comments
13 pages, 4 figures