Topological semimetal candidate CaSn₃ shows superconductivity at low temperatures, providing a promising platform for understanding the interplay between topological physics and superconductivity [1,2]. To clarify the intercorrelation between topology and superconductivity, not only the investigation of superconducting gap structure, but also a detailed study of the Fermiology in the normal state is essential. Here, we present de Haas van Alphen quantum oscillations study for topological semimetal candidate CaSn₃ single crystal via torque magnetometry in high magnetic fields up to 35T. Comparing the density functional theory calculations with our experimental observations in the quantum oscillations, we will discuss the detailed Fermi surfaces, spin-splitting due to the Zeeman effect, and the non-trivial topological aspects of CaSn₃.

[1] S. Gupta, R. Juneja, R. Shinde, and A. K. Singh, Journal of Applied Physics 121, 214901 (2017).
[2] X. Luo, D. F. Shao, Q. L. Pei, J. Y. Song, L. Hu, Y. Y. Han, X. B. Zhu, W. H. Song, W. J. Lu, and Y. P. Sun, J. Mater. Chem. C 3, 11432 (2015).