Symmetry-Gated Sliding: Decoupling Interlayer Translation from Polarization Reversal in Boron Nitride Ferroelectrics
Abstract
Electric-field-driven polarization switching in sliding ferroelectrics depends on how local interlayer motion is accommodated by the surrounding structure. Yet the relationship between sliding, domain-wall (DW) propagation, and collective domain evolution under changing vector fields remains unclear. Here, we show that local symmetry governs the coupling between field-induced forces and interlayer sliding, while DW connectivity determines how local motion contributes to net domain conversion. These effects are examined across three structural scales, from monodomains and isolated DWs to reconstructed moire networks. We investigate bilayer hexagonal boron nitride (h-BN) using molecular dynamics with a machine-learning interatomic potential that incorporates field-dependent electric enthalpy. An initially monodomain bilayer switches through directional wrinkling and interlayer sliding, while the barrier along a constrained flat path remains finite. Pre-existing DWs propagate with velocities governed by their shear and tensile character, and an additional in-plane field tunes wall velocity and width according to its orientation. In reconstructed triangular moire networks, shared junctions and boundary curvature mediate domain evolution and recovery after field removal or reversal. Most strikingly, a rotating in-plane field translates the layers and displaces the moiré nodes by approximately 1 AA yet leaves the AB/BA domain-area ratio without detectable change, because threefold connectivity cancels the contributions of individual walls. We term this response polarization-silent sliding. These results distinguish local sliding, DW translation, and net domain conversion as different responses to electric fields and establish how local structural symmetry and DW connectivity shape their selective control.
Related
- Anomalous Pressure-Enhanced Polarization in Sliding Ferroelectrics
- Direct Observation of Nanoscale Polarization Switching in HZO Ferroelectrics Using STEM-EBIC
- Phase-field insight into the nature of topological polarization structures in uniaxial ferroelectrics
- Charge Filling-Dependent Valley Polarization and its Dynamics Driven by Correlated Interlayer Exciton States in WSe2/WS2 Heterobilayer
- Inversion symmetry breaking by interlayer hybridization in a tetralayer van der Waals heterostructure
BibTeX
@misc{wang2026symmetrygated,
title = {{Symmetry-Gated Sliding: Decoupling Interlayer Translation from Polarization Reversal in Boron Nitride Ferroelectrics}},
author = {Yinan Wang and Teruyasu Mizoguchi},
howpublished = {arXiv},
year = {2026},
month = nov,
doi = {10.48550/arxiv.2611.09025},
eprint = {2611.09025},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2611.09025},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Symmetry-Gated Sliding: Decoupling Interlayer Translation from Polarization Reversal in Boron Nitride Ferroelectrics
AU - Yinan Wang
AU - Teruyasu Mizoguchi
PY - 2026
DA - 2026/11/06
PB - arXiv
DO - 10.48550/arxiv.2611.09025
UR - https://arxiv.org/abs/2611.09025
AB - Electric-field-driven polarization switching in sliding ferroelectrics depends on how local interlayer motion is accommodated by the surrounding structure. Yet the relationship between sliding, domain-wall (DW) propagation, and collective domain evolution under changing vector fields remains unclear. Here, we show that local symmetry governs the coupling between field-induced forces and interlayer sliding, while DW connectivity determines how local motion contributes to net domain conversion. These effects are examined across three structural scales, from monodomains and isolated DWs to reconstructed moire networks. We investigate bilayer hexagonal boron nitride (h-BN) using molecular dynamics with a machine-learning interatomic potential that incorporates field-dependent electric enthalpy. An initially monodomain bilayer switches through directional wrinkling and interlayer sliding, while the barrier along a constrained flat path remains finite. Pre-existing DWs propagate with velocities governed by their shear and tensile character, and an additional in-plane field tunes wall velocity and width according to its orientation. In reconstructed triangular moire networks, shared junctions and boundary curvature mediate domain evolution and recovery after field removal or reversal. Most strikingly, a rotating in-plane field translates the layers and displaces the moiré nodes by approximately 1 AA yet leaves the AB/BA domain-area ratio without detectable change, because threefold connectivity cancels the contributions of individual walls. We term this response polarization-silent sliding. These results distinguish local sliding, DW translation, and net domain conversion as different responses to electric fields and establish how local structural symmetry and DW connectivity shape their selective control.
ER -