Transport and thermal properties in RVB states

Abstract

Dynamical properties of holons are studied in the s, s+ id and d wave resonating valence bond (RVB) states at nearly half-filling. In the mean field theory, the effective mass of a holon depends on the spatial symmetry of the RVB states. We calculate the relaxation time of a holon due to the scattering by the spinons and find that the relaxation time is sensitive to the excitation spectrum of the spinon and the effective mass of the holon. We also study effects of magnetic impurities on the RVB states at half-filling and show that the impurities cause the T-linear specific heat in the s+ id and d states.