Impurity induced density of states and residual transport in nonunitary superconductors

We obtain general expressions for the residual density of states, electrical conductivity, and thermal conductivity for nonunitary superconductors due to impurity scattering. We apply the results to the so-called " B phase" of Pr Os4 Sb12, which we describe using a nonunitary gap function derived from symmetry considerations. The conductivity tensor has inequivalent diagonal components due to off-axis nodal positions, which may be detectable in experiments.