Impurity induced density of states and residual transport in nonunitary superconductors
arXiv:0708.0217 · doi:10.1103/PhysRevB.76.184511
Abstract
We obtain general expressions for the residual density of states, electrical conductivity and thermal conductivity for non-unitary superconductors due to impurity scattering. We apply the results to the so-called `B phase' of PrOs4Sb12, which we describe using a non-unitary 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.
8 pages, 1 figure