Quantum oscillations in topological semimetal candidate CaSn₃

Binary stannide CaSn₃ with a centrosymmetric cubic structure is theoretically predicted to be a topologically non-trivial semimetal, and undergoes superconductivity at T_c ≈ 4.2K, providing an excellent platform for the understanding of interplay between topology and superconductivity. Here, we report a detailed study of de Haas–van Alphen (dHvA) quantum oscillations for CaSn₃ single crystals via torque magnetometry in high magnetic fields up to 35T. Analyzing the dependence of dHvA oscillation frequency and amplitude on temperatures and field angles, we will review the effective carrier masses and the normal state fermiology, and also discuss the non-trivial Berry phase in CaSn₃.