Identification and optimization of accurate spin models for Fermi-Hubbard ladders using matrix product states (opens in new tab)

Author(s): Andoni Agirre, Thomas Frederiksen, Géza Giedke, and Tobias GraßOpen-shell nanographenes offer a controlled setting to study correlated magnetism emerging from $π$-electron systems. Here, we study non-bipartite Fermi-Hubbard ladders describing oligo(indenoindene) molecules. These feature a gapped, weakly dispersing manifold of quasizero modes in their single-par…[Phys. Rev. B 113, 245422] Published Mon Jun 22, 2026