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cond-mat.str-el2025
Tetrahedral Core in a Sea of Competing Magnetic Phases in Graphene
Maxime Lucas, Arnaud Ralko, Andreas Honecker +1
We demonstrate the emergence of a robust tetrahedral magnetic ground state in monolayer graphene doped to the van Hove singularity (vHS). This noncoplanar, gapped spin configuratio…
cond-mat.str-el2025
Exact ground state on the 3D analogue of the Shastry-Sutherland model
Kelvin Salou-Smith, Arnaud Ralko, Ludovic D. C. Jaubert
Exact results in frustrated quantum many-body systems are rare, especially in dimensions higher than one. The Shastry-Sutherland (SS) model stands out as a rare example of a two-di…