Magnetoresistance and Shubnikov-de Haas oscillations in layered Nb3SiTe6 thin flakes

We present the magnetoresistance (MR) and Hall resistivity of layered ternary Nb3SiTe6 thin flakes with magnetic field up to 33 T. The flakes show strong angle-dependent MR properties and unsaturated quasilinear dependence accompanied with Shubnikov-de Haas (SdH) oscillations. Hall resistivity study demonstrates that the hole carriers dominate the transport properties in the whole temperature range. The angle-dependent SdH oscillations reveal a two-dimensional Fermi surface of Nb3SiTe6. Furthermore, by analysis of SdH oscillations, we observed a nontrivial 7r-Berry phase in the SdH oscillations which suggests the nontrivial topological nature of Nb3SiTe6.