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cond-mat.str-el2026
Quantum Geometry-Driven RKKY: From Flat to Dispersive Bands
Zhenggang Zhou, Chuang Li, Lun-Hui Hu
In flat-band systems, quantum metric bounds physical observables like superfluid weight and coherence length, suggesting a single geometric scale for spatial correlations. Here, we…
cond-mat.str-el2025
Inter-orbital spin-triplet superconductivity from altermagnetic fluctuations
Chen Lu, Chuang Li, Chao Cao +3
Altermagnetic (AM) fluctuations are a new class of collinear spin fluctuations whose role in mediating superconductivity faces a fundamental tension: their -point peak favors in…