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In kagome metals, the chiral current order $\eta$ withtime-reversal-symmetry-breaking is the source of various exotic electronicstates, while the method of controlling the current order and its interplaywith the star-of-David bond order $\phi$ are still unsolved. Here, we revealthat tiny uniform orbital magnetization $M[\eta,\phi]$ is induced by the chiralcurrent order, and its magnitude is prominently enlarged under the presence ofthe bond order. Importantly, we derive the magnetic-field ($h$)-inducedGinzburg-Landau free energy expression $\Delta F[h,\eta,\phi]$, which enablesus to elucidate the field-induced current-bond phase transitions in kagomemetals. The emergent current-bond-$h$ trilinear coupling term in the freeenergy, $-3m_1 h\eta\phi$, naturally explains the characteristic magnetic fieldsensitive electronic states in kagome metals, such as the field-induced currentorder and the strong interplay between the bond and current orders.Furthermore, we present a natural explanation for the drastic strain-inducedincrement of the current order transition temperature T_{TRSB} reported by arecent experiment.

Drastic magnetic-field-induced chiral current order and emergent current-bond-field interplay in kagome metal AV3Sb5 (A=Cs,Rb,K)