Pressure Driven Phase Transition in 1T-TiSe$_2$ , a MOIPT+DMFT Study

Abstract: The nature of unconventional superconductivity associated with charge density wave order in transition metal dichalcogenides is currently a debated issue. Starting from a normal state elec- tronic structure followed by a charge ordered state how superconductivity in 1T-TiSe 2 arises with applied pressure is still under research. A preformed excitonic liquid driven ordered state mediated superconductivity is found in broad class of TMD on the border of CDW. Using dynamical mean field theory with input from noninteracting band structure calculation, I show a superconducting phase appears near about 2 GPa pressure at a temperature of 2 K and this region persists upto 4 GPa Pressure.