Floquet Spin-Antiferroelectricity in Collinear Antiferromagnets
Abstract
Multiferroics combining magnetic and polar orders offer opportunities for optical control of spin and electric degrees of freedom. Here, using symmetry analysis and Floquet theory, we establish Floquet spin-antiferroelectricity coexisting with unconventional magnetism in periodically driven collinear antiferromagnets, qualifying it as an unconventional multiferroic. This driven phase supports compensated, spin-resolved in-plane electric polarizations perpendicular to the vertical rotation axis, which are strictly forbidden by crystalline symmetry in equilibrium. Using a tight-binding model, we elucidate how light polarization controls the emergence of polar order and spin responses. Moreover, first-principles-based Floquet calculations predict its realization in monolayer MnPS3, identifying a realistic two-dimensional antiferromagnetic platform. These findings establish a nonequilibrium route to spin-antiferroelectricity beyond equilibrium symmetry constraints and connect Floquet engineering, unconventional magnetism, and multiferroicity through optical control of spin and polar degrees of freedom.
Related
- Floquet-Volkov spin polarization in spin-degenerate Antiferromagnets
- Floquet spin-group theory for light-tailored spin splitting in collinear magnets
- Photoinduced Odd- and Mixed-Parity Magnetism in Collinear Antiferromagnets
- Electric Hidden Unconventional Collinear Magnetism in 2D 𝒫𝒯-Symmetric Antiferromagnets
- Collinear and noncollinear antiferromagnetic ordering in a highly frustrated decorated square kagomé lattice antiferromagnets of the nabokoite family
BibTeX
@misc{wei2026floquet,
title = {{Floquet Spin-Antiferroelectricity in Collinear Antiferromagnets}},
author = {Yu-hao Wei and Zheng Qin and Shengpu Huang and Dong-Hui Xu and Da-shuai Ma and Rui Wang},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16758},
eprint = {2609.16758},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.16758},
}
RIS
TY - UNPB
TI - Floquet Spin-Antiferroelectricity in Collinear Antiferromagnets
AU - Yu-hao Wei
AU - Zheng Qin
AU - Shengpu Huang
AU - Dong-Hui Xu
AU - Da-shuai Ma
AU - Rui Wang
PY - 2026
DA - 2026/09/16
PB - arXiv
DO - 10.48550/arxiv.2609.16758
UR - https://arxiv.org/abs/2609.16758
AB - Multiferroics combining magnetic and polar orders offer opportunities for optical control of spin and electric degrees of freedom. Here, using symmetry analysis and Floquet theory, we establish Floquet spin-antiferroelectricity coexisting with unconventional magnetism in periodically driven collinear antiferromagnets, qualifying it as an unconventional multiferroic. This driven phase supports compensated, spin-resolved in-plane electric polarizations perpendicular to the vertical rotation axis, which are strictly forbidden by crystalline symmetry in equilibrium. Using a tight-binding model, we elucidate how light polarization controls the emergence of polar order and spin responses. Moreover, first-principles-based Floquet calculations predict its realization in monolayer MnPS_3, identifying a realistic two-dimensional antiferromagnetic platform. These findings establish a nonequilibrium route to spin-antiferroelectricity beyond equilibrium symmetry constraints and connect Floquet engineering, unconventional magnetism, and multiferroicity through optical control of spin and polar degrees of freedom.
ER -