Intrinsic i -Wave Altermagnetism in 2D Graphene Superlattices.
- 1Department of Applied Physics, Aalto University, Espoo, Finland.
Abstract
Altermagnets feature unconventional magnetism due to their momentum-dependent spin splitting purely driven by magnetic order, for which a variety of transition-metal-based d -wave altermagnets have been proposed. However, carbon-based altermagnets remain largely unexplored, even though magnetism of graphene nanostructures has been widely demonstrated. Here, through a comprehensive symmetry analysis, we establish a symmetry-guided design principle for realizing higher-order i -wave altermagnetism in graphene antidot superlattices and demonstrate its emergence in both monolayer and bilayer graphene, particularly in the Bernal-stacked bilayer. By combining atomistic tight binding models and first principles methods, we show the appearance of an interaction-induced i -wave altermagnetic splitting, originating from the intrinsic magnetic instability of 2D graphene antidot superlattices. Our work establishes a strategy to engineer i -wave altermagnetism in a graphene platform, extending the materials landscape beyond conventional d -wave altermagnets and putting forward a carbon-based platform for higher-order altermagnetic spintronics.
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BibTeX
@article{yu2026intrinsic,
title = {{Intrinsic i -Wave Altermagnetism in 2D Graphene Superlattices.}},
author = {Cuiju Yu and Jose L Lado},
journal = {Advanced science (Weinheim, Baden-Wurttemberg, Germany)},
year = {2026},
month = oct,
doi = {10.1002/advs.78167},
url = {https://europepmc.org/article/MED/42902492},
note = {CC BY},
}
RIS
TY - JOUR
TI - Intrinsic i -Wave Altermagnetism in 2D Graphene Superlattices.
AU - Cuiju Yu
AU - Jose L Lado
PY - 2026
DA - 2026/10/20
JO - Advanced science (Weinheim, Baden-Wurttemberg, Germany)
DO - 10.1002/advs.78167
UR - https://europepmc.org/article/MED/42902492
AB - Altermagnets feature unconventional magnetism due to their momentum-dependent spin splitting purely driven by magnetic order, for which a variety of transition-metal-based d -wave altermagnets have been proposed. However, carbon-based altermagnets remain largely unexplored, even though magnetism of graphene nanostructures has been widely demonstrated. Here, through a comprehensive symmetry analysis, we establish a symmetry-guided design principle for realizing higher-order i -wave altermagnetism in graphene antidot superlattices and demonstrate its emergence in both monolayer and bilayer graphene, particularly in the Bernal-stacked bilayer. By combining atomistic tight binding models and first principles methods, we show the appearance of an interaction-induced i -wave altermagnetic splitting, originating from the intrinsic magnetic instability of 2D graphene antidot superlattices. Our work establishes a strategy to engineer i -wave altermagnetism in a graphene platform, extending the materials landscape beyond conventional d -wave altermagnets and putting forward a carbon-based platform for higher-order altermagnetic spintronics.
SN - 2198-3844
ER -