Nonlinear conductivity of NbS3 in a high-pressure metallic phase

From Insulator to Superconductor: A Series of Pressure-Driven Transitions in Quasi-One-Dimensional TiS3 Nanoribbons

“…All these compounds have free electrons, at least, above the charge-density wave (CDW) transitions temperatures. Pressure-induced superconductivity has been reported also for the triclinic phase of NbS 3 , which is semiconducting at ambient conditions. However, its semiconducting state can be attributed to the dimerization of the structure, i.e., a form of CDW, which is suppressed under moderate pressure .…”

Non‐linear conductivity of NbS3 in pressure induced metal state

“…We observed an increase in conductivity of NbS 3 at pressure about 5.6 GPa by six orders of magnitude at room temperature accompanied by a change of the sign of the temperature coefficient of the resistance and interpreted this as a transition from dielectric to metallic conductivity regime. Here we present the experimental results of the systematic study of the I-V curves of NbS 3 (I) in an extended temperature range in a metallic conductivity region, that exists only at pressures above 6 GPa [7].…”