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We have investigated the magnetoresistance (MR) and Hall resistivityproperties of the single crystals of tantalum sulfide, Ta3S2, which wasrecently predicted to be a new type II Weyl semimetal. Large MR (up to ~8000%at 2 K and 16 T), field-induced metal-insulator-like transition and nonlinearHall resistivity are observed at low temperatures. The large MR shows a strongdependence on the field orientation, leading to a giant anisotropicmagnetoresistance (AMR) effect. For the field applied along the b-axis (B//b),MR exhibits quadratic field dependence at low fields and tends towardssaturation at high fields; while for B//a, MR presents quadratic fielddependence at low fields and becomes linear at high fields without any trendtowards saturation. The analysis of the Hall resistivity data indicates thecoexistence of a large number of electrons with low mobility and a small numberof holes with high mobility. Shubnikov-de Haas (SdH) oscillation analysisreveals three fundamental frequencies originated from the three-dimensional(3D) Fermi surface (FS) pockets. We find that the semi-classical multibandmodel is sufficient to account for the experimentally observed MR in Ta3S2.

Magnetotransport properties of the type II Weyl semimetal candidate Ta3S2