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SrxBi2Se3 is recently reported to be a superconductor derived fromtopological insulator Bi2Se3. It shows a maximum resistive Tc of 3.25 K atambient pressure. We report magnetic (upto 1 GPa) and transport properties(upro 8 Gpa) under pressure for single crystalline Sr0.1Bi2Se3 superconductor.Magnetic measurements show that Tc decreases from ~2.6 K (0 GPa) to ~1.9 K(0.81 GPa). Similar behavior is observed in transport properties as wellwithout much change in the metallic characteristics in normal stateresistivity. No reentrant superconducting phase (Physical Review B 93, 144514(2016)) is observed at high pressure. Normal state resistivity near Tc isexplained by Fermi liquid model. Above 100 K, a polaronic hopping conductionmechanism with two parallel channels for current flow is indicated. Bandstructure calculations indicate decreasing density of states at Fermi levelwith pressure. In consonance with transition temperature suppression inconventional BCS low Tc superconductors, the pressure effect in SrxBi2Se3 iswell accounted by pressure induced band broadening.

Evidence for conventional superconductivity in Sr0.1Bi2Se3 from high pressure studies