Insulator-metal transition in PrYCaCoO3 thin films studied by terahertz and infrared spectroscopies

Abstract

Charge transport in PrYCaCoO3 thin films was studied experimentally by terahertz (THz) and infrared spectroscopies and by dc conductivity measurements. The metal-insulator transition is clearly visible in THz conductivity, whereas the observed weak temperature dependence of dc conductivity is limited by inter-grain charge transport.

Keywords

• time-domain spectroscopy THz
• metal-insulator transition
• conductivity
• scattering
• phonons
• spectroscopy
• conductivity measurement
• compounds
• temperature dependence