Magnetoelectric Phase Transition and Axion Dynamics
Abstract
Magnetoelectric phase transitions have been experimentally studied, but no macroscopic theory has been proposed to explain their dynamical origin. In this work, we assume that the axion quasiparticle with frequency undergoes a condensation like process. We show that these magnetoelectric phase transitions can be described within a Ginzbur Landau framework by introducing a coupled dynamic parameter, the axion angle, which is proportional to the magnetoelectric coeffcient. We derive relations between the static axion angle, the axion frequency, and the phase transition temperature for different magnetoelectric materials, respectively, and compare these calculations with existing experimental results. We also connect the artificially designed Dzyaloshinskii Moriya interaction with the axion condensate like process, so that the relation between the static axion angle and the experimentally measured frequency shift can be obtained.
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BibTeX
@misc{xie2026magnetoelectric,
title = {{Magnetoelectric Phase Transition and Axion Dynamics}},
author = {Chen-Hui Xie and Runyu Lei and Jiayi Liu and Yihuai Chen and Jinxing Zhang and Yu Gao and Sichun Sun},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.02759},
eprint = {2609.02759},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.02759},
}
RIS
TY - UNPB
TI - Magnetoelectric Phase Transition and Axion Dynamics
AU - Chen-Hui Xie
AU - Runyu Lei
AU - Jiayi Liu
AU - Yihuai Chen
AU - Jinxing Zhang
AU - Yu Gao
AU - Sichun Sun
PY - 2026
DA - 2026/09/06
PB - arXiv
DO - 10.48550/arxiv.2609.02759
UR - https://arxiv.org/abs/2609.02759
AB - Magnetoelectric phase transitions have been experimentally studied, but no macroscopic theory has been proposed to explain their dynamical origin. In this work, we assume that the axion quasiparticle with frequency undergoes a condensation like process. We show that these magnetoelectric phase transitions can be described within a Ginzbur Landau framework by introducing a coupled dynamic parameter, the axion angle, which is proportional to the magnetoelectric coeffcient. We derive relations between the static axion angle, the axion frequency, and the phase transition temperature for different magnetoelectric materials, respectively, and compare these calculations with existing experimental results. We also connect the artificially designed Dzyaloshinskii Moriya interaction with the axion condensate like process, so that the relation between the static axion angle and the experimentally measured frequency shift can be obtained.
ER -