The linear response of a metal in the "normal" RVB state to an electric field, IR-absorption by free carriers, and current-voltage characteristics of tunnel junctions are studied using Keldysh's diagram technique. The temperature dependence of the in-plane conductivity obtained differs from the experimentally observed dependence. The form of the tunneling I-V curves and IR-absorption reflects the spectrum of elementary excitations.
ASJC Scopus subject areas
- Physics and Astronomy(all)