Quantum-Geometry-Driven Exact Ferromagnetic Ground State in a Nearly Flat Band

Taisei Kitamura1,2, Hiroki Nakai3,4, Hosho Katsura1,5,6

  • 1The University of Tokyo, Department of Physics, Graduate School of Science, Tokyo 113-0033, Japan.

Physical Review Letters
|October 2, 2026
PubMed

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