Observation of a midinfrared band inSrTiO3y

Abstract
Transmission measurements have been performed in reduced SrTiO3 between 300 and 17 K for different concentrations of oxygen vacancies. A midinfrared absorption band has been observed, whose behavior with doping and temperature is accounted for by an intraband scattering process, phonon or disorder assisted. Connections with the family of high-Tc superconducting oxides are demonstrated.