Quantum metric induced nonlinear transport in the hidden loop-current phase of kagome metal RbV${}_3$Sb${}_5$

Jia-Chen Shi, Shupeng Xu, Utkarsh Khandelwal +4

A hidden low-temperature phase with possible loop-current order has been proposed in the kagome metals AV${}_3$Sb${}_5$ (A=K, Rb or Cs), but its experimental signatures remain subtle a…