Quantum oscillations in kagome metals CsTi3Bi5 and RbTi3Bi5

We explore quantum oscillations in the kagome metals CsTi₃Bi₅ and RbTi₃Bi₅, using high magnetic fields and low temperatures. We reveal new quantum oscillation frequencies in CsTi₃Bi₅, showing a complex Fermi surface that matches density functional theory predictions. Interestingly, the Rb compound exhibits notably different results from the Cs compound, despite theoretical expectations of similarity. This work deepens our understanding of the electronic intricacies within kagome lattice systems and spotlights their role as a playground for unearthing novel quantum states. Our findings pave the way for future investigations in the quantum behaviors of kagome metals, offering insights for advanced material development.