As recently proposed, the kagome metal CsV3Sb5 could host spontaneous orbital-currents due to Chern Fermi pockets, but these are challenging to detect. Here, a large g-factor enhancement in magnetic breakdown orbits, determined via quantum oscillations, provides a visible manifestation of Berry-curvature-induced large orbital moments.
- Kuan-Wen Chen
- Guoxin Zheng
- Lu Li