Based on the hybrid functional, we find that the magnetic moment on vanadium atoms in pressurized CsV3Sb5 can be triggered by the phase transition from ISD to pristine pattern combined with the suppression of CDWs by pressure.

Recently synthesized Kagome compounds AV3Sb5 attract great attention due to the unusual coexistence of the topology, charge density wave, and superconductivity. In this work, based on the band structures for CsV3Sb5 in the pristine phase, we construct an effective six-band model for the low-energy processes; utilizing the random phase approximation on the effective six-band model, we show that the E1u ( p wave ) pairing dominates in the region of 0 < U < 0.32 eV, the A2g ( I wave ) in the region of 0.32 < U < 0.75 eV and the E2g ( d wave ) in the region of 0.75 < U < 1 eV. Considering that the correlation in AV3Sb5 is weak or intermediate, these results suggest that pairing symmetry is A2g ( I-wave ) in the CsV3Sb5, which can explain some recent experiments about pairing symmetry.