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However, carbon\u2010based altermagnets remain largely unexplored, even though magnetism of graphene nanostructures has been widely demonstrated. Here, through a comprehensive symmetry analysis, we establish a symmetry\u2010guided design principle for realizing higher\u2010order \u2010wave altermagnetism in graphene antidot superlattices and demonstrate its emergence in both monolayer and bilayer graphene, particularly in the Bernal\u2010stacked bilayer. By combining atomistic tight binding models and first principles methods, we show the appearance of an interaction\u2010induced \u2010wave altermagnetic splitting, originating from the intrinsic magnetic instability of 2D graphene antidot superlattices. Our work establishes a strategy to engineer \u2010wave altermagnetism in a graphene platform, extending the materials landscape beyond conventional \u2010wave altermagnets and putting forward a carbon\u2010based platform for higher\u2010order altermagnetic\u00a0spintronics.<\/jats:p>","DOI":"10.1002\/advs.78167","type":"journal-article","created":{"date-parts":[[2026,10,21]],"date-time":"2026-10-21T04:29:12Z","timestamp":1792556952000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Intrinsic i\u2010Wave Altermagnetism in 2D Graphene Superlattices"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9726-7574","authenticated-orcid":false,"given":"Cuiju","family":"Yu","sequence":"first","affiliation":[{"name":"Department of Applied Physics Aalto University  Espoo Finland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9916-1589","authenticated-orcid":false,"given":"Jose L.","family":"Lado","sequence":"additional","affiliation":[{"name":"Department of Applied Physics Aalto University  Espoo 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