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Topological semimetals characterize a novel class of quantum materialshosting Dirac/Weyl fermions. The important features of topological fermions canbe exhibited by quantum oscillations. Here we report the magnetoresistance andShubnikov-de Haas (SdH) quantum oscillation of longitudinal resistance in thesingle crystal of topological semimetal Ta3SiTe6 with the magnetic field up to38 T. Periodic amplitude of the oscillations reveals related information aboutthe Fermi surface. The fast Fourier transformation spectra represent a singleoscillatory frequency. The analysis of the oscillations shows the Fermi pocketwith a cross-section area of 0.13 angstrom power minus 2. Combiningmagneto-transport measurements and the first-principles calculation, we findthat these oscillations come from the hole pocket. Hall resistivity and the SdHoscillations recommend that Ta3SiTe6 is a hole dominated system.

Magneto-transport and Shubnikov-de Haas oscillations in the layered ternary telluride Ta3SiTe6 topological semimetal