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arXiv · 1403.0671

Ultrafast switching of the electric polarization and magnetic chirality in BiFeO3 by an electric field

Satadeep Bhattacharjee·Dovran Rahmedov·Dawei Wang·Jorge Iniguez·Laurent Bellaiche
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Abstract

Using a first-principles-based effective Hamiltonians within molecular dynamics simulations, we discover that applying an electric field that is opposite to the initial direction of the polarization results in a switching of both the polarization and the magnetic chirality vector of multiferroic BiFeO3 at an ultrafast pace (namely of the order of picoseconds). We discuss the origin of such a double ultrafast switching, which is found to involve original intermediate magnetic states and may hold promise for designing various devices.

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Satadeep Bhattacharjee, Dovran Rahmedov, Dawei Wang, Jorge Iniguez, Laurent Bellaiche. 2014-03-04. Ultrafast switching of the electric polarization and magnetic chirality in BiFeO3 by an electric field. https://doi.org/10.1103/physrevlett.112.147601

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