  We discuss some experimental signatures associated with the topological
structures of unconventional superconductor order parameters of form
$d_{x^2-y^2}+ix$, where $x=s,p_x \pm p_y$, or $d_{xy}$. Specifically, we study
the topological surface states on the $(110)$ and equivalent surfaces of such
superconductors which are observable in Andreev tunneling experiments, as well
as evaluate the magnetic flux trapped in superconducting rings of such
superconductors with multiple grain-boundary Josephson junctions. Previous
experiments are examined and several new experiments suggested.

Superconductivity