Evolution of fermi surface on Se substitution in nodal line semimetal Ni₃In₂S₂

Shandite compounds with the general structure T₃M₂X₂ (T = Ni, Co, Rh, Pd; M = Sn, In, Pb; X = S, Se) are promising candidates for realizing various topological semimetal phases. In this study, we explore the of evolution electronic structure in Ni₃In₂S_2-xSe_x using high-field quantum oscillation. Our results demonstrate that the substitution of Se for S induces a transformation in the Fermi surface topology, shifting from a three-dimensional to a two-dimensional character. Interestingly, the extracted effective mass remains largely unaffected by the Se doping, suggesting the robustness of the topological phase of Ni₃In₂S₂ against enhanced spin-orbit coupling. Our findings offer critical insights into the tunability of topological properties within the shandite family, with potential implications for future quantum materials design.