Lifetime of bimerons and antibimerons in two-dimensional magnets
Abstract
Soliton-based computing architectures have recently emerged as a promising avenue to overcome fundamental limitations of conventional information technologies, the von Neumann bottleneck. In this context, magnetic skyrmions have been widely considered for in-situ processing devices due to their mobility and enhanced lifetime in materials with broken inversion symmetry. However, modern applications in nonvolatile reservoir or neuromorphic computing raise the additional demand for nonlinear intersoliton interactions. Here we report that solitons in easy-plane magnets, such as bimerons and antibimerons, show greater versatility and potential for nonlinear interactions than skyrmions and antiskyrmions, making them superior candidates for this class of applications. Using first-principles and transition state theory, we predict the coexistence of degenerate bimerons and antibimerons at zero field in a van der Waals heterostructure Fe 3 GeTe 2 /Cr 2 Ge 2 Te 6 -an experimentally feasible system. We demonstrate that, owing to their distinct structural symmetry, bimerons exhibit fundamentally different behavior from skyrmions and cannot be regarded as their in-plane counterparts, as is often assumed. This distinction leads to unique properties of bimerons and antibimerons, which arise from the unbroken rotational symmetry in easy-plane magnets. These range from anisotropic soliton-soliton interactions to strong entropic effects on their lifetime, driven by the nonlocal nature of thermal excitations. Our findings reveal a broader richness of solitons in easy-plane magnets and underline their unique potential for spintronic devices.
Related
- Purely Electric-Field Control of Topological Magnetism in Two-Dimensional Magnets
- Finite-temperature phase transitions across spin symmetries in two-dimensional magnets
- Magnon superlattices around skyrmions in frustrated magnets
- Interacting multicomponent SU(N) magnets
- From Nested Soliton Crystals to Skyrmion Crystals in Chiral Magnets
BibTeX
@article{goerzen2026lifetime,
title = {{Lifetime of bimerons and antibimerons in two-dimensional magnets}},
author = {Moritz A Goerzen and Tim Drevelow and Soumyajyoti Haldar and Hendrik Schrautzer and Stefan Heinze and Dongzhe Li},
journal = {Physical Review B},
year = {2026},
month = nov,
doi = {10.1103/b2jq-63z9},
eprint = {2509.09344},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05852371v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Lifetime of bimerons and antibimerons in two-dimensional magnets
AU - Moritz A Goerzen
AU - Tim Drevelow
AU - Soumyajyoti Haldar
AU - Hendrik Schrautzer
AU - Stefan Heinze
AU - Dongzhe Li
PY - 2026
DA - 2026/11/05
JO - Physical Review B
DO - 10.1103/b2jq-63z9
UR - https://hal.science/hal-05852371v1
AB - Soliton-based computing architectures have recently emerged as a promising avenue to overcome fundamental limitations of conventional information technologies, the von Neumann bottleneck. In this context, magnetic skyrmions have been widely considered for in-situ processing devices due to their mobility and enhanced lifetime in materials with broken inversion symmetry. However, modern applications in nonvolatile reservoir or neuromorphic computing raise the additional demand for nonlinear intersoliton interactions. Here we report that solitons in easy-plane magnets, such as bimerons and antibimerons, show greater versatility and potential for nonlinear interactions than skyrmions and antiskyrmions, making them superior candidates for this class of applications. Using first-principles and transition state theory, we predict the coexistence of degenerate bimerons and antibimerons at zero field in a van der Waals heterostructure Fe 3 GeTe 2 /Cr 2 Ge 2 Te 6 -an experimentally feasible system. We demonstrate that, owing to their distinct structural symmetry, bimerons exhibit fundamentally different behavior from skyrmions and cannot be regarded as their in-plane counterparts, as is often assumed. This distinction leads to unique properties of bimerons and antibimerons, which arise from the unbroken rotational symmetry in easy-plane magnets. These range from anisotropic soliton-soliton interactions to strong entropic effects on their lifetime, driven by the nonlocal nature of thermal excitations. Our findings reveal a broader richness of solitons in easy-plane magnets and underline their unique potential for spintronic devices.
SN - 2469-9950
SN - 2469-9969
ER -