Pressure-induced metallization and 3d-like behavior in TcS 2 .
Dean SayreEmily SiskaG Alexander SmithNicholas ChangChangyong ParkFrederic PoineauCraig P SchwartzKeith V LawlerAshkan SalamatPublished in: Chemical communications (Cambridge, England) (2022)
TcS 2 undergoes a charge transfer insulator to metal transition above 28 GPa. Laser annealing reveals a kinetically hindered high pressure arsenopyrite phase that is recoverable to ambient. The new phase is similar to the Mn-dichalcogenides rather than the expected Re-dichalcogenides and involves the formation of S-S and Tc-Tc bonds.