NMR evidence for a loop-current state with broken $C_6$ symmetry in the charge-ordered CsV${}_3$Sb${}_5$

X. Y. Feng, Z. Zhao, J. Dou +7

Loop-current (LC) order and the associated time-reversal symmetry breaking (TRSB) are pivotal for understanding hidden magnetism and unconventional superconductivity in strongly co…