Pressure-induced suppression of charge density wave and emergence of superconductivity in 1T-VSe2

We report pressure evolution of charge density wave (CDW) order and the emergence of superconductivity (SC) in 1T-VSe2 single crystal by studying resistance and magnetoresistance behavior under high pressure. With increasing quasihydrostatic pressure the CDW order enhances with its ordering temperature (similar to 100 K at ambient P) increasing marginally up to 5 GPa. At higher pressures, CDW-like resistance anomaly increases more rapidly with the characteristic temperature reaching similar to 290 K at 14.2 GPa. Upon further increase of pressure, the resistance anomaly due to CDW order gets suppressed drastically with rapidly increased metallicity (as clearly evidenced from the increased RRR value) and superconductivity emerges at similar to 15 GPa, with the onset critical temperature (T-c) similar to 4 K. The pressure dependence of T-c is found negligible, different from an increase or a dome-shaped behavior seen in isostructural layered diselenide superconductors. The high-pressure magnetoresistance and Hall measurements suggest successive electronic structural changes with Fermi surface modifications at 5 and similar to 12 GPa.