Quantum metric–induced giant and reversible nonreciprocal transport phenomena in chiral loop-current phases of kagome metals

Proceedings of the National Academy of Sciences, Volume 122, Issue 35, September 2025. <br/>SignificanceRich symmetry-breaking phenomena driven by nontrivial quantum geometry are central topics in condensed matter physics. In particular, the chiral loop-current order observed in kagome metals and cuprate superconductors has attracted significant …