Ferromagnetism at singular saddle points via divergent quantum metric and Stoner theory in a 2D t2g-orbital model.
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Sign-problem-free QMC simulations show that strong impurities reduce the critical interaction for superconductivity in a BHZ-Hubbard model by nucleating Cooper pairs in impurity-induced subgap ring states.
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Quantum geometric ferromagnetism by singular saddle point
Ferromagnetism at singular saddle points via divergent quantum metric and Stoner theory in a 2D t2g-orbital model.
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Emergent superconductivity upon disordering a topological insulator
Sign-problem-free QMC simulations show that strong impurities reduce the critical interaction for superconductivity in a BHZ-Hubbard model by nucleating Cooper pairs in impurity-induced subgap ring states.