Emergence of Chiral Dynamical Multiferroicity in a Ferroelectric Lattice Nonadiabatically Driven by Ultrafast Achiral Electric Fields
Abstract
It has been shown recently that chiral dynamical multiferroicity can be generated on a ferroelectric lattice whose electric dipoles respond masslessly under chiral optical pumping. Here we demonstrate that, when driven by ultrafast electric pulses, chiral dynamical multiferroicity can also emerge even in situations where the external field is achiral. We reveal this striking phenomenon using a prototypical system of a BaTiO3 moiré ferroelectric lattice, emphasizing the key factor that its chiral electric dipoles inevitably behave massively upon ultrafast driving. At a deeper level, the massive nature is attributed to the anisotropic and nonadiabatic dipolar responses, as captured by the phase difference between the faster longitudinal and slower transverse components of the ferroelectric polarization. Crucially, such a phase difference naturally also gives rise to dynamical magnetization, which exhibits chiral magnetic textures with monopole-like topology coexisting with the ferroelectric chirality. These findings establish the dipolar mass as an enabling and tunable degree of freedom in inducing chiral dynamical multiferroicity, offering new avenues for ultrafast, non-contact magnetic control using pure electric probes.
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BibTeX
@misc{zhang2026emergence,
title = {{Emergence of Chiral Dynamical Multiferroicity in a Ferroelectric Lattice Nonadiabatically Driven by Ultrafast Achiral Electric Fields}},
author = {Chuanbao Zhang and Zhizhong Ding and Ping Cui and Zhenyu Zhang},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.27592},
eprint = {2609.27592},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.27592},
}
RIS
TY - UNPB
TI - Emergence of Chiral Dynamical Multiferroicity in a Ferroelectric Lattice Nonadiabatically Driven by Ultrafast Achiral Electric Fields
AU - Chuanbao Zhang
AU - Zhizhong Ding
AU - Ping Cui
AU - Zhenyu Zhang
PY - 2026
DA - 2026/09/23
PB - arXiv
DO - 10.48550/arxiv.2609.27592
UR - https://arxiv.org/abs/2609.27592
AB - It has been shown recently that chiral dynamical multiferroicity can be generated on a ferroelectric lattice whose electric dipoles respond masslessly under chiral optical pumping. Here we demonstrate that, when driven by ultrafast electric pulses, chiral dynamical multiferroicity can also emerge even in situations where the external field is achiral. We reveal this striking phenomenon using a prototypical system of a BaTiO_3 moiré ferroelectric lattice, emphasizing the key factor that its chiral electric dipoles inevitably behave massively upon ultrafast driving. At a deeper level, the massive nature is attributed to the anisotropic and nonadiabatic dipolar responses, as captured by the phase difference between the faster longitudinal and slower transverse components of the ferroelectric polarization. Crucially, such a phase difference naturally also gives rise to dynamical magnetization, which exhibits chiral magnetic textures with monopole-like topology coexisting with the ferroelectric chirality. These findings establish the dipolar mass as an enabling and tunable degree of freedom in inducing chiral dynamical multiferroicity, offering new avenues for ultrafast, non-contact magnetic control using pure electric probes.
ER -