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TaSb$_{2}$ has been predicted theoretically and proposed throughmagnetotransport experiment to be a topological semimetal. In earlier reports,the Shubnikov-de Haas oscillation has been analyzed to probe the Fermi surface,with magnetic field along a particular crystallographic axis only. By employinga sample rotator, we reveal highly anisotropic transverse magnetoresistance byrotating the magnetic field along different crystallographic directions. Toprobe the anisotropy in the Fermi surface, we have performed magnetizationmeasurements and detected strong de Haas-van Alphen (dHvA) oscillations for themagnetic field applied along \textbf{b} and \textbf{c} axes as well asperpendicular to \textbf{bc} plane of the crystals. Three Fermi pockets havebeen identified by analyzing the dHvA oscillations. Hall measurement revealselectron as the only charge carrier, i.e., all the three Fermi pockets areelectron type. With the application of magnetic field along different crystaldirections, the cross sectional areas of the Fermi pockets have been foundsignificantly different. Other physical parameters, such as the effective massof the charge carrier and Fermi velocity have also been calculated using theLifshitz-Kosevich formula.

Anisotropic Fermi surface probed by the de Haas-van Alphen oscillation in proposed Dirac Semimetal TaSb$_{2}$