Possible Phase-Sensitive Tests of Pairing Symmetry in Pnictide Superconductors
Possible Phase-Sensitive Tests of Pairing Symmetry in Pnictide Superconductors
The discovery of the new class of pnictide superconductors has engendered a controversy about their pairing symmetry, with proposals ranging from an extended s-wave or "s$_{\pm}$" symmetry to nodal or nodeless d-wave symmetry to still more exotic order parameters such as p-wave. In this paper, building on the earlier, similar …